JPH0143716B2 - - Google Patents
Info
- Publication number
- JPH0143716B2 JPH0143716B2 JP13515184A JP13515184A JPH0143716B2 JP H0143716 B2 JPH0143716 B2 JP H0143716B2 JP 13515184 A JP13515184 A JP 13515184A JP 13515184 A JP13515184 A JP 13515184A JP H0143716 B2 JPH0143716 B2 JP H0143716B2
- Authority
- JP
- Japan
- Prior art keywords
- potassium
- source
- silicic acid
- producing
- silicate fertilizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical group [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 36
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 19
- 239000011591 potassium Substances 0.000 claims description 19
- 229910052700 potassium Inorganic materials 0.000 claims description 19
- 239000003337 fertilizer Substances 0.000 claims description 18
- 239000001103 potassium chloride Substances 0.000 claims description 18
- 235000011164 potassium chloride Nutrition 0.000 claims description 18
- 239000004111 Potassium silicate Substances 0.000 claims description 17
- 235000019353 potassium silicate Nutrition 0.000 claims description 17
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 17
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 17
- 239000002893 slag Substances 0.000 claims description 17
- 235000012239 silicon dioxide Nutrition 0.000 claims description 13
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical group [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 11
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 11
- 235000011151 potassium sulphates Nutrition 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 238000000354 decomposition reaction Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims description 3
- 229910001950 potassium oxide Inorganic materials 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims 1
- 230000007812 deficiency Effects 0.000 claims 1
- 238000010791 quenching Methods 0.000 claims 1
- 230000000171 quenching effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 8
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- 229940072033 potash Drugs 0.000 description 6
- 235000015320 potassium carbonate Nutrition 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- MQWCQFCZUNBTCM-UHFFFAOYSA-N 2-tert-butyl-6-(3-tert-butyl-2-hydroxy-5-methylphenyl)sulfanyl-4-methylphenol Chemical compound CC(C)(C)C1=CC(C)=CC(SC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O MQWCQFCZUNBTCM-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Landscapes
- Fertilizers (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、ク溶性の珪酸カリ肥料の製造方法に
関し、特に製鉄の高炉や製鋼用および特殊鋼の溶
解炉、精練炉等から排出されるスラグを利用した
ク溶性の珪酸カリ肥料の製造方法に関するもので
ある。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for producing a soluble potassium silicate fertilizer, and in particular to a method for producing slag-soluble potassium silicate fertilizer, particularly for producing slag discharged from blast furnaces for iron manufacturing, melting furnaces for steel manufacturing and special steel, smelting furnaces, etc. The present invention relates to a method for producing a soluble potassium silicate fertilizer using.
［従来の技術］
ク溶性珪酸カリ肥料とは、それに含まれる珪酸
とカリが水に溶解せず植物の根から分泌されるク
エン酸によつて溶解されることを特徴とする肥料
で、例えば微粉炭燃焼で発生する廃ガス中のダス
ト、いわゆるフライアツシユにカリ源を混合し焼
成することによつて製造する技術が知られている
（例えば特公昭57−52857号公報、特公昭59−7671
号公報参照）
しかし従来のフライアツシユを用いたク溶性の
珪酸カリ肥料の製造方法による場合は、焼成に比
較的多量の熱エネルギーを要し、また用い得るカ
リ源は一般に分解しやすい苛性カリあるいは炭酸
カリ等に限られ、さらに発生ガス量が多く排ガス
処理にコストが嵩み、かつプロセスが複雑なもの
となるため比較的複雑な装置を必要とするという
問題があつた。[Prior Art] A soluble potassium silicate fertilizer is a fertilizer characterized in that the silicic acid and potassium contained in it are not dissolved in water but are dissolved by citric acid secreted from the roots of plants, such as pulverized charcoal. A technology is known in which the dust in the exhaust gas generated by combustion, so-called flyash, is mixed with a potassium source and then fired (for example, Japanese Patent Publication No. 57-52857, Japanese Patent Publication No. 59-7671).
However, in the case of the conventional production method of soluble potassium silicate fertilizer using fly ashes, a relatively large amount of thermal energy is required for firing, and the usable potassium sources are generally easily decomposed caustic potassium or potassium carbonate. Furthermore, there were problems in that the amount of gas generated was large, the cost of exhaust gas treatment increased, and the process was complicated, requiring relatively complicated equipment.
またカリガラスからク溶性カリ肥料を作る技術
は例えば特開昭53−75069号公報に記載されてい
る。しかしながら、いずれの公知の技術もク溶性
カリ肥料を作るためには800〜1100℃という高温
を必要とし、かつ急冷を行うので、多量の熱エネ
ルギを消費する。 A technique for producing a soluble potash fertilizer from potash grass is described in, for example, Japanese Patent Application Laid-open No. 75069/1983. However, all of the known techniques require high temperatures of 800 to 1100°C to produce soluble potassium fertilizers, and require rapid cooling, which consumes a large amount of thermal energy.
［発明の目的］
したがつて本発明の目的は、製造原価の中で比
較的大きな比率を占める熱エネルギを節約でき、
また分解しにくい塩化カリ、硫酸カリ等の安価な
カリ源が使用でき、また発生ガス量が少なく排ガ
ス処理が容易であり、さらにプロセスが簡単で従
来のような複雑な装置を必要としないク溶性の珪
酸カリ肥料の製造方法を提供するにある。[Object of the Invention] Therefore, the object of the present invention is to save heat energy, which accounts for a relatively large proportion of manufacturing costs, and to
In addition, inexpensive potassium sources such as potassium chloride and potassium sulfate, which are difficult to decompose, can be used, the amount of gas generated is small and exhaust gas treatment is easy, and the process is simple and does not require the complicated equipment of conventional methods. The present invention provides a method for producing potassium silicate fertilizer.
［発明の構成］
このため本発明によれば、製鉄の高炉や製鋼の
溶解炉等から排出されるスラグに、それの溶融状
を保ちつつ珪酸の不足分として適量の珪酸源、適
量のカリ源、及び熱源としての適量の炭素粉を投
じて撹拌し、この配合調整された溶融物を水、空
気等で急に急冷し、これを適当な粒度に粉砕ある
いは造粒してク溶性の珪酸カリ肥料を得る珪酸カ
リ肥料の製造方法が提供される。[Structure of the Invention] Therefore, according to the present invention, an appropriate amount of silicic acid source and an appropriate amount of potassium source are added to the slag discharged from a blast furnace for iron manufacturing, a melting furnace for steel manufacturing, etc. to compensate for the lack of silicic acid while maintaining its molten state. , and an appropriate amount of carbon powder as a heat source, and stirred, and the blended melt is rapidly cooled with water, air, etc., and it is crushed or granulated to an appropriate particle size to produce a soluble potassium silicate fertilizer. A method for producing a potassium silicate fertilizer is provided.
［好ましい実施の態様］
珪酸の不足分として補給される珪酸源として
は、珪砂、カリ長石、フエロシリコンのダスト等
が有効であり、またカリ源は、溶解スラグが高温
度であることからして、分解しにくい塩化カリ、
硫酸カリを使用することができる。[Preferred Embodiment] Silica sand, potassium feldspar, ferrosilicon dust, etc. are effective as the silicic acid source to be replenished to compensate for the shortage of silicic acid. Potassium chloride, which is difficult to decompose,
Potassium sulfate can be used.
カリ源として塩化カリを使用する場合には、分
解のために酸素が必要であるので、塩化カリの投
入と同時に水蒸気または酸素（または空気）を吹
き込むようにし、またカリ源として硫酸カリを使
用する場合には、分解のための酸素は必要としな
いが、分解を助けるために炭素を投入する。 When using potassium chloride as a potash source, oxygen is required for decomposition, so steam or oxygen (or air) should be blown in at the same time as potassium chloride is added, and potassium sulfate should be used as a potash source. In some cases, oxygen is not required for decomposition, but carbon is introduced to aid decomposition.
補給する珪酸源およびカリ源の配合量は、得ら
れる製品の珪酸の含有量が30重量％以上、カリの
含有量が酸化カリ換算で20重量％以上になるよう
に配合調整する。 The blending amounts of the silicic acid source and potassium source to be supplied are adjusted so that the silicic acid content of the obtained product is 30% by weight or more, and the potash content is 20% by weight or more in terms of potassium oxide.
［実施例］
本発明は、前述のようにク溶性の珪酸カリ肥料
を、製鉄の高炉や製鋼（特に特殊鋼）の溶解炉等
から排出されるスラグから製造するものである。[Example] As described above, in the present invention, a soluble potassium silicate fertilizer is produced from slag discharged from a blast furnace for iron manufacturing, a melting furnace for steel manufacturing (particularly special steel), and the like.
高炉のスラグの組成は、例えば
SiO2 34％
CaO 40％
MgO ６％
その他Al2O3等 20％
であり、しかも1200〜1500℃の高温で廃棄され
る。 The composition of blast furnace slag is, for example, 34% SiO 2 40% CaO 6% MgO 20% other materials such as Al 2 O 3 and is discarded at a high temperature of 1200 to 1500°C.
前工程から廃棄されるスラグを冷却することな
く、溶融したまま保持し、溶融状を保つたまま配
成分を調節する。それにはまずSiO2の不足分を
補給する。 To maintain molten slag discarded from a previous process without cooling it, and adjust the composition while maintaining the molten state. First, the shortage of SiO 2 is replenished.
SiO2源としては、珪砂、カリ長石、フエロシ
リコンのダスト等が有効であるが、いずれにして
も後でカリが補給されることも計算に入れて
SiO2の含有量が30〜35重量％以上になるように
する。実用上ではスラグ１トンに対し約10〜200
Kg程度とする。 Silica sand, potassium feldspar, ferrosilicon dust, etc. are effective sources of SiO2 , but in any case, take into account that potassium will be replenished later.
The content of SiO 2 should be 30-35% by weight or more. In practice, it is about 10 to 200 per ton of slag.
Approximately Kg.
次にカリを補給する。カリ源としては、安価に
入手できる塩化カリまたは硫酸カリを使用する。 Next, replenish potash. Potassium chloride or potassium sulfate, which are available at low cost, is used as the potassium source.
何れを使用するかによつて多少プロセスに差異
があり、塩化カリの場合には分解のために酸素が
必要であるから、塩化カリの投入と同時に水蒸気
または酸素（または空気）を吹込む。 There are some differences in the process depending on which one is used; in the case of potassium chloride, oxygen is required for decomposition, so steam or oxygen (or air) is blown in at the same time as the potassium chloride is added.
投入された塩化カリはSiO2と溶融してKCl・
nSiO2なる固溶体を形成し、これが酸素もしくは
水蒸気により反応して分解する。 The added potassium chloride melts with SiO 2 to form KCl.
It forms a solid solution called nSiO 2 , which reacts with oxygen or water vapor and decomposes.
KCl＋nSiO2→KCl・nSiO2
KCl・nSiO2＋O2→K2O・mSiO2＋Cl2
KCl・nSiO2＋H2O→K2O・mSiO2＋HCl
となつて、K2OはSiO2と結合して珪酸カリとな
り、同時にHClガスもしくはCl2ガスが排出する。KCl+nSiO 2 →KCl・nSiO 2 KCl・nSiO 2 +O 2 →K 2 O・mSiO 2 +Cl 2 KCl・nSiO 2 +H 2 O→K 2 O・mSiO 2 +HCl, and K 2 O combines with SiO 2 . It becomes potassium silicate, and at the same time HCl gas or Cl 2 gas is emitted.
硫酸カリを使用するめ場合には、分解のための
酸素を必要とせず、分解を助けるための炭素を投
入する。 When using potassium sulfate, oxygen is not required for decomposition, and carbon is added to aid decomposition.
投入された硫酸カリと炭素は高温度の中で分解
し、
K2SO4＋Ｃ→K2O＋CO＋SO2
K2SO4＋１／2C→K2O＋１／2CO2＋SO2
となつて、K2OはSiO2と結合して珪酸カリとな
り、同時にSO2ガスおよびCOガスもしくはCO2
ガスを排出する。 The introduced potassium sulfate and carbon decompose at high temperature, becoming K 2 SO 4 +C→K 2 O+CO+SO 2 K 2 SO 4 +1/2C→K 2 O+1/2CO 2 +SO 2 , and K 2 O is Combines with SiO 2 to form potassium silicate, and simultaneously releases SO 2 gas and CO gas or CO 2
Exhaust gas.
カリの補給量は、K2O換算で含有量が20重量％
以上になるようにする。実用上ではスラグ1Ton
に対し塩化カリで約500〜550Kg、硫酸カリで約
600〜650Kg程度になる。 The amount of potassium supplemented is 20% by weight in terms of K2O .
Make it so that it becomes more than that. In practical use, 1 ton of slag
However, about 500 to 550 kg for potassium chloride and about 550 kg for potassium sulfate.
It will be around 600-650Kg.
塩化カリもしくは硫酸カリの投入は、空気また
は酸素をキヤリヤーとして、スラグの底のほうに
吹き込み注入すると、撹拌の効果が得られて有利
である。またその酸素量に見合つた炭素粉も同時
に吹き込むと熱量の補給になる。 When introducing potassium chloride or potassium sulfate, it is advantageous to blow into the bottom of the slag using air or oxygen as a carrier, since this produces a stirring effect. In addition, if carbon powder corresponding to the amount of oxygen is blown in at the same time, the amount of heat can be supplemented.
粉体の投入およびカリ源の分解によつてスラグ
の温度が下るので、熱量の補給を必要とする。 As the temperature of the slag decreases due to the addition of powder and the decomposition of the potassium source, it is necessary to replenish the amount of heat.
最も簡単には、炭素の粉末を酸素または空気を
キヤリヤーとして吹込むことであるが、スラグの
量に対してガス量の限界があり、炭素粉吹き込み
だけでは熱量が不足する場合がある。そのために
スラグの容器を誘導炉にして、電気誘導により加
熱するとか、容器の天井部にバーナーを設置して
輻射で加熱するなどの装置を設けるようにする。 The simplest method is to inject carbon powder with oxygen or air as a carrier, but there is a limit to the amount of gas relative to the amount of slag, and the amount of heat may be insufficient if only the carbon powder is injected. For this purpose, the slag container is made into an induction furnace and heated by electric induction, or a burner is installed on the ceiling of the container to heat it by radiation.
排出されたHClガスもしくはSO2ガスは非常に
濃度が高いので、水で吸収する等により容易に有
効利用することができるし、最終的に大気に放出
するにしても従来の技術で容易に無害化すること
ができる。 The emitted HCl gas or SO 2 gas has a very high concentration, so it can be easily used effectively by absorbing it with water, etc., and even if it is eventually released into the atmosphere, it can be easily made harmless using conventional techniques. can be converted into
このようにして配合組成を調整し、焼成を終つ
た溶融物は、水、空気等で急冷すればク溶化する
から、これを適当な粒度に粉砕あるいは造粒して
目的とする珪酸カリ肥料を得ることができる。 The blended composition is adjusted in this way, and the molten material that has been fired will be solubilized if it is rapidly cooled with water, air, etc., and the desired potassium silicate fertilizer can be obtained by pulverizing or granulating it to an appropriate particle size. be able to.
図面は本発明を実施するための装置を示してい
る。あらかじめスラグＳが注入されているとりべ
１を所定位置に置く。このとりべ１は公知のもの
で加熱用のバーナ２、ランス入口３および排ガス
出口４を有している。 The drawing shows an apparatus for implementing the invention. A ladle 1 into which slag S has been injected in advance is placed in a predetermined position. This ladle 1 is of a known type and has a heating burner 2, a lance inlet 3, and an exhaust gas outlet 4.
他方、原料である珪酸源、カリ源、炭素粉等を
適量混合した粉体タンク５から原料はフイーダ６
を介して送り出される。フイーダ６から送り出さ
れた原料は高圧ガス源７からの高圧ガスによつ
て、ホース８を介して粉体吹込みランス９に送ら
れる。このランス９には蒸気供給源１０から蒸気
が送られるようになつている。またランス９はラ
ンス上下動装置１１によつて上下動でき、とりべ
１のランス入口３からとりべ１内に挿入できるよ
うになつている。 On the other hand, raw materials are transferred to a feeder 6 from a powder tank 5 in which appropriate amounts of raw materials such as a silicic acid source, a potassium source, and carbon powder are mixed.
sent out via. The raw material sent out from the feeder 6 is sent to a powder injection lance 9 via a hose 8 by high pressure gas from a high pressure gas source 7. Steam is supplied to this lance 9 from a steam supply source 10. Further, the lance 9 can be moved up and down by a lance vertical movement device 11, and can be inserted into the ladle 1 from the lance inlet 3 of the ladle 1.
［発明の効果］
本発明によれば、次のような優れた作用、効果
が得られる。[Effects of the Invention] According to the present invention, the following excellent functions and effects can be obtained.
(イ) 溶融しているスラグをそのまま利用すること
により、製造原価の中で比較的大きな比率を占
める熱エネルギを節約できる。(b) By using molten slag as it is, thermal energy, which accounts for a relatively large proportion of manufacturing costs, can be saved.
(ロ) 溶融しているスラグは高温度であるから、分
解しにくい塩化カリ、硫酸カリ等の安価なカリ
源が使用できる。(b) Since the molten slag is at a high temperature, inexpensive potassium sources such as potassium chloride and potassium sulfate, which are difficult to decompose, can be used.
(ハ) 発生ガス量が少ないから、排ガス処理が容易
で、ガス中の塩素、塩化水素、硫酸等を有効に
回収できる。(c) Because the amount of gas generated is small, exhaust gas treatment is easy and chlorine, hydrogen chloride, sulfuric acid, etc. in the gas can be effectively recovered.
(ニ) 最初から溶融状態で反応ができるためプロセ
スが簡単で、従来のような複雑な装置を必要と
しない。(d) The process is simple because the reaction can be carried out in the molten state from the beginning, and the complicated equipment required in the past is not required.
図面は本発明を実施する装置の説明図である。
Ｓ……スラグ、１……とりべ、５……タンク、
９……ランス、１１……ランス上下動装置。
The drawing is an explanatory diagram of an apparatus for implementing the present invention. S...Slag, 1...Ladle, 5...Tank,
9...Lance, 11...Lance vertical movement device.
Claims (1)
スラグに、該スラグの溶融状を保ちつつ珪酸の不
足分として適量の珪酸源、適量のカリ源を投入し
て撹拌し、この配合調整された溶融物を水、空気
等で急冷し、これを適当な粒度に粉砕あるいは造
粒してク溶性の珪酸カリ肥料を得ることを特徴と
する珪酸カリ肥料の製造方法。 ２ カリ源が塩化カリであり、塩化カリの投入
と、同時に分解のための水蒸気または酸素（また
は空気）を吹込むことを特徴とする特許請求の範
囲第１項に記載の珪酸カリ肥料の製造方法。 ３ カリ源が硫酸カリであり、硫酸カリの投入と
同時に分解を助けるための炭素を投入することを
特徴とする特許請求の範囲第１項に記載の珪酸カ
リ肥料の製造方法。 ４ 珪酸の含有量が30重量％以上、カリの含有量
が酸化カリ換算で20重量％以上になるように珪酸
源およびカリ源を配合調整することを特徴とする
特許請求の範囲第１項に記載の珪酸カリ肥料の製
造方法。[Scope of Claims] 1. Slag discharged from a blast furnace for iron manufacturing, a melting furnace for steel manufacturing, etc. is stirred by adding an appropriate amount of silicic acid source and an appropriate amount of potassium source to compensate for the silicic acid deficiency while maintaining the molten state of the slag. A process for producing potassium silicate fertilizer, which comprises: quenching the blended melt with water, air, etc., and crushing or granulating it to an appropriate particle size to obtain a soluble potassium silicate fertilizer. 2. The method for producing a potassium silicate fertilizer according to claim 1, wherein the potassium source is potassium chloride, and the method includes introducing potassium chloride and simultaneously blowing water vapor or oxygen (or air) for decomposition. . 3. The method for producing a potassium silicate fertilizer according to claim 1, wherein the potassium source is potassium sulfate, and carbon for aiding decomposition is added at the same time as the potassium sulfate is added. 4. According to claim 1, the silicic acid source and the potassium source are blended and adjusted so that the silicic acid content is 30% by weight or more and the potassium content is 20% by weight or more in terms of potassium oxide. The method for producing the described potassium silicate fertilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13515184A JPS6117483A (en) | 1984-07-02 | 1984-07-02 | Manufacture of potassium silicate fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13515184A JPS6117483A (en) | 1984-07-02 | 1984-07-02 | Manufacture of potassium silicate fertilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6117483A JPS6117483A (en) | 1986-01-25 |
| JPH0143716B2 true JPH0143716B2 (en) | 1989-09-22 |
Family
ID=15145005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13515184A Granted JPS6117483A (en) | 1984-07-02 | 1984-07-02 | Manufacture of potassium silicate fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6117483A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1160359A (en) * | 1997-08-08 | 1999-03-02 | Nkk Corp | Slow release potash fertilizer |
| JPH11106273A (en) * | 1997-08-08 | 1999-04-20 | Nkk Corp | Slow-release Kari fertilizer |
| JP3648995B2 (en) * | 1997-08-11 | 2005-05-18 | Ｊｆｅスチール株式会社 | Slow-release potash fertilizer |
| JP3648994B2 (en) * | 1997-08-11 | 2005-05-18 | Ｊｆｅスチール株式会社 | Slow-release potash fertilizer |
| JP2000185987A (en) * | 1998-10-15 | 2000-07-04 | Nkk Corp | Method for producing slow-release potash fertilizer |
| JP2000290090A (en) * | 1999-02-05 | 2000-10-17 | Nkk Corp | Slow release potash fertilizer |
| JP3649029B2 (en) * | 1999-03-18 | 2005-05-18 | Ｊｆｅスチール株式会社 | K2O-CaO-SiO2 crystal material and slow-release potash fertilizer |
| JP2003048793A (en) * | 2001-08-02 | 2003-02-21 | Nkk Corp | Method for producing slow-release potash fertilizer |
| JP5881286B2 (en) * | 2010-11-05 | 2016-03-09 | 新日鐵住金株式会社 | Method to increase the yield of paddy rice using steelmaking slag grains and to suppress the generation of methane gas and nitrous oxide gas |
| JP6077501B2 (en) * | 2013-09-05 | 2017-02-08 | 卜部産業株式会社 | Single-grain fertilizer and method for producing the same |
-
1984
- 1984-07-02 JP JP13515184A patent/JPS6117483A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6117483A (en) | 1986-01-25 |
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