JPS6437409A - Production of monetite - Google Patents
Production of monetiteInfo
- Publication number
- JPS6437409A JPS6437409A JP19151687A JP19151687A JPS6437409A JP S6437409 A JPS6437409 A JP S6437409A JP 19151687 A JP19151687 A JP 19151687A JP 19151687 A JP19151687 A JP 19151687A JP S6437409 A JPS6437409 A JP S6437409A
- Authority
- JP
- Japan
- Prior art keywords
- monetite
- prescribed
- caco3
- cao
- crystalline
- 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.)
- Granted
Links
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 3
- 239000007864 aqueous solution Substances 0.000 abstract 2
- 235000010216 calcium carbonate Nutrition 0.000 abstract 2
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract 2
- 239000000920 calcium hydroxide Substances 0.000 abstract 2
- 235000011116 calcium hydroxide Nutrition 0.000 abstract 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract 2
- 235000012255 calcium oxide Nutrition 0.000 abstract 2
- 239000000292 calcium oxide Substances 0.000 abstract 2
- 239000013078 crystal Substances 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract 1
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- 238000001556 precipitation Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
Landscapes
- Crystals, And After-Treatments Of Crystals (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
PURPOSE:To produce monetite having prescribed crystal size in high efficiency without causing environmental pollution, by adding powder of CaO, Ca(OH)2 or CaCO3 to a concentrated aqueous solution o phosphoric acid and reacting at a prescribed temperature under highly acidic condition. CONSTITUTION:One or more kinds of powdery materials selected from CaO, Ca(OH)2 and CaCO3 and having particle diameter of <=100mum is slowly added to a concentrated aqueous solution of phosphoric acid having a concentration of >=10%, the pH of the mixture is adjusted to a strong acid range (e.g. <=3.5) and the components are made to react at a temperature within a prescribed range for a definite period to effect the precipitation of the reaction product from the solution. The crystal size of the product can be controlled to a prescribed level by this process (e.g. fine-crystalline monetite at <=40 deg.C and crystalline monetite at >=40 deg.C). The precipitate is filtered, washed and dried to obtain a high-quality monetite having prescribed size in high yield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19151687A JPS6437409A (en) | 1987-08-01 | 1987-08-01 | Production of monetite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19151687A JPS6437409A (en) | 1987-08-01 | 1987-08-01 | Production of monetite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6437409A true JPS6437409A (en) | 1989-02-08 |
| JPH0511048B2 JPH0511048B2 (en) | 1993-02-12 |
Family
ID=16275954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19151687A Granted JPS6437409A (en) | 1987-08-01 | 1987-08-01 | Production of monetite |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6437409A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5158756A (en) * | 1989-06-24 | 1992-10-27 | Asahi Kogaku Kogyo Kabushiki Kaisha | Porous particles of calcium phosphate compound and production process thereof |
| WO2012101428A1 (en) * | 2011-01-24 | 2012-08-02 | King's College London | Method of making monetite |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5921510A (en) * | 1982-07-23 | 1984-02-03 | ヘキスト・アクチエンゲゼルシヤフト | Manufacture of hydrogen calcium phosphate dihydrate |
-
1987
- 1987-08-01 JP JP19151687A patent/JPS6437409A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5921510A (en) * | 1982-07-23 | 1984-02-03 | ヘキスト・アクチエンゲゼルシヤフト | Manufacture of hydrogen calcium phosphate dihydrate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5158756A (en) * | 1989-06-24 | 1992-10-27 | Asahi Kogaku Kogyo Kabushiki Kaisha | Porous particles of calcium phosphate compound and production process thereof |
| WO2012101428A1 (en) * | 2011-01-24 | 2012-08-02 | King's College London | Method of making monetite |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0511048B2 (en) | 1993-02-12 |
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