CA2313862A1 - Procede de production de clinker de ciment portland a l'aide d'une chaudiere a lit fluidise circulant - Google Patents

Procede de production de clinker de ciment portland a l'aide d'une chaudiere a lit fluidise circulant Download PDF

Info

Publication number: CA2313862A1
Authority: CA; Canada
Prior art keywords: ashes; desulfurizer; agent; fluidized bed; portland cement
Prior art date: 1999-07-19
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.): Abandoned

Application number

CA 2313862

Other languages

English (en)

Inventor

Enrique Ramon Martinez-Vera

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Cemex SAB de CV

Original Assignee

Cemex Central SA de CV

Priority date (The priority date 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 date listed.)

1999-07-19

Filing date

2000-07-13

Publication date

2001-01-19

2000-07-13 Application filed by Cemex Central SA de CV filed Critical Cemex Central SA de CV

2001-01-19 Publication of CA2313862A1 publication Critical patent/CA2313862A1/fr

Status Abandoned legal-status Critical Current

Links

238000000034 method Methods 0.000 title claims abstract description 41
239000011398 Portland cement Substances 0.000 title claims abstract description 28
229910052717 sulfur Inorganic materials 0.000 claims abstract description 29
NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 28
239000011593 sulfur Substances 0.000 claims abstract description 27
239000003795 chemical substances by application Substances 0.000 claims abstract description 26
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 18
239000000446 fuel Substances 0.000 claims abstract description 18
239000007787 solid Substances 0.000 claims abstract description 12
239000002006 petroleum coke Substances 0.000 claims abstract description 10
150000003463 sulfur Chemical class 0.000 claims abstract description 7
239000006227 byproduct Substances 0.000 claims abstract description 4
239000002956 ash Substances 0.000 claims description 38
239000000203 mixture Substances 0.000 claims description 28
235000002918 Fraxinus excelsior Nutrition 0.000 claims description 24
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 23
238000002485 combustion reaction Methods 0.000 claims description 21
239000007789 gas Substances 0.000 claims description 18
235000008733 Citrus aurantifolia Nutrition 0.000 claims description 17
235000011941 Tilia x europaea Nutrition 0.000 claims description 17
239000004571 lime Substances 0.000 claims description 17
OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 14
229910052742 iron Inorganic materials 0.000 claims description 12
239000004927 clay Substances 0.000 claims description 10
238000010438 heat treatment Methods 0.000 claims description 7
AGWMJKGGLUJAPB-UHFFFAOYSA-N aluminum;dicalcium;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Ca+2].[Ca+2].[Fe+3] AGWMJKGGLUJAPB-UHFFFAOYSA-N 0.000 claims description 3
229910052918 calcium silicate Inorganic materials 0.000 claims description 3
JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 claims description 3
235000012241 calcium silicate Nutrition 0.000 claims description 3
HOOWDPSAHIOHCC-UHFFFAOYSA-N dialuminum tricalcium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[Al+3].[Al+3].[Ca++].[Ca++].[Ca++] HOOWDPSAHIOHCC-UHFFFAOYSA-N 0.000 claims description 3
BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 claims description 3
229910021534 tricalcium silicate Inorganic materials 0.000 claims description 3
235000019976 tricalcium silicate Nutrition 0.000 claims description 3
229910052925 anhydrite Inorganic materials 0.000 claims 2
238000001816 cooling Methods 0.000 claims 2
235000019738 Limestone Nutrition 0.000 description 17
239000006028 limestone Substances 0.000 description 17
ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 16
238000006243 chemical reaction Methods 0.000 description 13
VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
238000004519 manufacturing process Methods 0.000 description 8
239000000567 combustion gas Substances 0.000 description 7
238000006477 desulfuration reaction Methods 0.000 description 7
230000023556 desulfurization Effects 0.000 description 7
BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 6
239000000292 calcium oxide Substances 0.000 description 6
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
239000000571 coke Substances 0.000 description 5
239000010881 fly ash Substances 0.000 description 5
239000004449 solid propellant Substances 0.000 description 5
239000000126 substance Substances 0.000 description 5
CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
230000008901 benefit Effects 0.000 description 4
229910000019 calcium carbonate Inorganic materials 0.000 description 4
239000010882 bottom ash Substances 0.000 description 3
239000004568 cement Substances 0.000 description 3
230000007613 environmental effect Effects 0.000 description 3
239000003546 flue gas Substances 0.000 description 3
238000000227 grinding Methods 0.000 description 3
229910052739 hydrogen Inorganic materials 0.000 description 3
229910052760 oxygen Inorganic materials 0.000 description 3
239000002245 particle Substances 0.000 description 3
239000000047 product Substances 0.000 description 3
239000002994 raw material Substances 0.000 description 3
239000002699 waste material Substances 0.000 description 3
102100025840 Coiled-coil domain-containing protein 86 Human genes 0.000 description 2
101000932708 Homo sapiens Coiled-coil domain-containing protein 86 Proteins 0.000 description 2
VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
229910002092 carbon dioxide Inorganic materials 0.000 description 2
239000001569 carbon dioxide Substances 0.000 description 2
239000000428 dust Substances 0.000 description 2
230000005611 electricity Effects 0.000 description 2
LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 2
229910052500 inorganic mineral Inorganic materials 0.000 description 2
239000000463 material Substances 0.000 description 2
239000011707 mineral Substances 0.000 description 2
229910052757 nitrogen Inorganic materials 0.000 description 2
238000000926 separation method Methods 0.000 description 2
SMNDYUVBFMFKNZ-UHFFFAOYSA-N 2-furoic acid Chemical compound OC(=O)C1=CC=CO1 SMNDYUVBFMFKNZ-UHFFFAOYSA-N 0.000 description 1
239000004215 Carbon black (E152) Substances 0.000 description 1
UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
239000002253 acid Substances 0.000 description 1
239000000654 additive Substances 0.000 description 1
230000000996 additive effect Effects 0.000 description 1
PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
230000015572 biosynthetic process Effects 0.000 description 1
238000001311 chemical methods and process Methods 0.000 description 1
239000011335 coal coke Substances 0.000 description 1
150000001875 compounds Chemical class 0.000 description 1
238000000354 decomposition reaction Methods 0.000 description 1
238000010586 diagram Methods 0.000 description 1
239000010440 gypsum Substances 0.000 description 1
229910052602 gypsum Inorganic materials 0.000 description 1
229930195733 hydrocarbon Natural products 0.000 description 1
150000002430 hydrocarbons Chemical class 0.000 description 1
238000002347 injection Methods 0.000 description 1
239000007924 injection Substances 0.000 description 1
238000002360 preparation method Methods 0.000 description 1
238000010791 quenching Methods 0.000 description 1
230000000171 quenching effect Effects 0.000 description 1
239000000377 silicon dioxide Substances 0.000 description 1
229910052814 silicon oxide Inorganic materials 0.000 description 1
239000003583 soil stabilizing agent Substances 0.000 description 1
238000003860 storage Methods 0.000 description 1
150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
239000000725 suspension Substances 0.000 description 1

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/006—Layout of treatment plant
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/28—Cements from oil shales, residues or waste other than slag from combustion residues, e.g. ashes or slags from waste incineration
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
- F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
- F23C10/08—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
- F23C10/10—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases the separation apparatus being located outside the combustion chamber
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/30—Sorption devices using carbon, e.g. coke
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/01002—Cooling of ashes from the combustion chamber by indirect heat exchangers
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Combustion & Propulsion (AREA)
Ceramic Engineering (AREA)
Materials Engineering (AREA)
Structural Engineering (AREA)
Organic Chemistry (AREA)
Treating Waste Gases (AREA)
Solid Fuels And Fuel-Associated Substances (AREA)
Fluidized-Bed Combustion And Resonant Combustion (AREA)

CA 2313862 1999-07-19 2000-07-13 Procede de production de clinker de ciment portland a l'aide d'une chaudiere a lit fluidise circulant Abandoned CA2313862A1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US35705799A	1999-07-19	1999-07-19
US09/357,057		1999-07-19

Publications (1)

Publication Number	Publication Date
CA2313862A1 true CA2313862A1 (fr)	2001-01-19

Family

ID=23404132

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA 2313862 Abandoned CA2313862A1 (fr)	1999-07-19	2000-07-13	Procede de production de clinker de ciment portland a l'aide d'une chaudiere a lit fluidise circulant

Country Status (6)

Country	Link
CN (1)	CN1285330A (fr)
CA (1)	CA2313862A1 (fr)
ES (1)	ES2181544B1 (fr)
FR (1)	FR2797628A1 (fr)
ID (1)	ID26610A (fr)
RU (1)	RU2184094C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US8021478B2 (en) *	2004-08-05	2011-09-20	Cemex Trademarks Worldwide Ltd.	Process to produce portland cement clinker and obtained clinker
CN109731449A (zh) *	2019-02-28	2019-05-10	兖矿集团有限公司	一种循环流化床锅炉的炉内脱硫方法
EP4303514A1 (fr)	2022-07-08	2024-01-10	Heidelberg Materials AG	Procédé de fabrication de scorie de ciment et cimenterie

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE10260741A1 (de) *	2002-12-23	2004-07-08	Outokumpu Oyj	Verfahren und Anlage zur Wärmebehandlung von feinkörnigen Feststoffen
FI120162B (fi) *	2005-02-17	2009-07-15	Foster Wheeler Energia Oy	Leijupetikattilalaitos ja menetelmä rikkipitoisen polttoaineen polttamiseksi leijupetikattilalaitoksessa
CN110397913A (zh) *	2019-08-06	2019-11-01	新乡市汇能玉源发电有限公司	一种可有效提高脱硝效率的糠醛渣锅炉脱硝系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS62502399A (ja) *	1985-04-05	1987-09-17	ザ　リ−ジエンツ　オブ　ザ　ユニバ−シテイ　オブ　カルフオルニア	セメント・キルン　ダストおよび赤泥を使用する水硬セメントの製造方法
DE3631757A1 (de) *	1986-09-18	1988-03-31	Boelsing Friedrich	Verfahren zur herstellung eines calciumsulfathaltigen festen sekundaerrohstoffes fuer die gewinnung von portlandzementklinker
US5049198A (en) *	1988-06-10	1991-09-17	Ribas Roger S	Calcium sulfate process for the coproduction of Portland cement clinker and concentrated sulfur dioxide adequate to manufacture sulfuric acid
DK49592D0 (da) *	1992-04-13	1992-04-13	Aalborg Portland As	Cementkomposition
US5698027A (en) *	1994-03-03	1997-12-16	F. L. Smidth & Co. A/S	Method and plant for manufacturing mineralized portland cement clinker
FR2718655B1 (fr) *	1994-04-13	1996-05-24	Gec Alsthom Stein Ind	Procédé de traitement des résidus solides provenant de la combustion d'un combustible contenant du soufre, et dispositif de traitement thermique pour la mise en Óoeuvre du procédé.
RU2128151C1 (ru) *	1996-10-04	1999-03-27	Новочеркасский государственный технический университет	Способ термообработки цементной сырьевой смеси и установка для его осуществления

2000
- 2000-07-13 CA CA 2313862 patent/CA2313862A1/fr not_active Abandoned
- 2000-07-17 ID ID20000599D patent/ID26610A/id unknown
- 2000-07-18 ES ES200001778A patent/ES2181544B1/es not_active Expired - Lifetime
- 2000-07-18 RU RU2000119207A patent/RU2184094C2/ru not_active IP Right Cessation
- 2000-07-19 CN CN00126825A patent/CN1285330A/zh active Pending
- 2000-07-19 FR FR0009500A patent/FR2797628A1/fr not_active Withdrawn

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US8021478B2 (en) *	2004-08-05	2011-09-20	Cemex Trademarks Worldwide Ltd.	Process to produce portland cement clinker and obtained clinker
CN109731449A (zh) *	2019-02-28	2019-05-10	兖矿集团有限公司	一种循环流化床锅炉的炉内脱硫方法
EP4303514A1 (fr)	2022-07-08	2024-01-10	Heidelberg Materials AG	Procédé de fabrication de scorie de ciment et cimenterie
WO2024008350A1 (fr)	2022-07-08	2024-01-11	Heidelberg Materials Ag	Procédé de fabrication de clinker de ciment et installation de ciment

Also Published As

Publication number	Publication date
CN1285330A (zh)	2001-02-28
RU2184094C2 (ru)	2002-06-27
ES2181544A1 (es)	2003-02-16
ES2181544B1 (es)	2004-06-16
ID26610A (id)	2001-01-25
FR2797628A1 (fr)	2001-02-23

Legal Events

Date	Code	Title	Description
2000-11-30	EEER	Examination request
2004-07-13	FZDE	Dead

Publication	Publication Date	Title
US6755905B2 (en)	2004-06-29	Use of high carbon coal ash
US4913742A (en)	1990-04-03	Process of making cement clinker and apparatus for performing said process
KR890001119B1 (ko)	1989-04-24	농축된 산소와 온도조절이 개선된 크라우스 공법에 의한 황회수공정
US4423702A (en)	1984-01-03	Method for desulfurization, denitrifaction, and oxidation of carbonaceous fuels
SU1052165A3 (ru)	1983-10-30	Способ восстановлени окиси железа
US4102989A (en)	1978-07-25	Simultaneous reductive and oxidative decomposition of calcium sulfate in the same fluidized bed
US4600438A (en)	1986-07-15	Co-production of cementitious products
NZ199930A (en)	1985-07-31	A process for simultaneously producing fuel gas and process heat from carbonaceous materials
US4503018A (en)	1985-03-05	Desulfurization of phosphogypsum
JPS6140452B2 (fr)	1986-09-09
CZ850587A3 (cs)	1998-06-17	Způsob získávání elektrické energie současně s výrobou kapalného surového železa a zařízení k provádění tohoto způsobu
US4774064A (en)	1988-09-27	Conversion of calcium compounds into solid and gaseous compounds
PL166128B1 (pl)	1995-04-28	Sposób wytwarzania drobnoziarnistego wegla i alkoholu metylowegoz materialu wyjsciowego zawierajacego wegiel PL PL PL
CS253732B2 (en)	1987-12-17	Process for directed reduction of materials containing iron oxide
US4014682A (en)	1977-03-29	Process for the production of elemental phosphorus and iron from phosphate rock
US4685964A (en)	1987-08-11	Method and apparatus for producing molten iron using coal
EP3392563A1 (fr)	2018-10-24	Procédé à lit fluidisé destiné en particulier à la combustion ou à la gazéification d'énergie de bois non séché à partir de l'amincissement et de la biomasse verte
US5066474A (en)	1991-11-19	Method for sulfur dioxide production from calcium sulfate by entrained high-temperature slagging reduction
US4617107A (en)	1986-10-14	Process for the recovery of oil from shale
US4700639A (en)	1987-10-20	Utilization of low grade fuels
US6024932A (en)	2000-02-15	Method for the conversion of gypsum to elemental sulfur
EP0657550A1 (fr)	1995-06-14	Procédé et installation pour la fabrication de fer
US20220112089A1 (en)	2022-04-14	Producing Burnt End Products from Natural, Carbonate-Containing, Granular Materials as Starting Raw Materials
JPS649376B2 (fr)	1989-02-17
US4396432A (en)	1983-08-02	Process for converting coal to gaseous fuel with production of Portland cement as a by-product