公开(公告)号：US4769067A

公开(公告)日：1988-09-06

申请号：US946006

申请日：1986-12-24

申请人： C. Norman Cochran ,  Melvin H. Brown

发明人： C. Norman Cochran ,  Melvin H. Brown

IPC分类号： C22B21/02 ,  C22B21/04 ,  C22B26/20 ,  C22B26/22

CPC分类号： C22B26/22 ,  C22B21/02 ,  C22B21/04 ,  C22B26/20 ,  Y02P10/212

摘要： An improved process is disclosed for carbothermically producing an alkaline earth metal aluminide from an aluminum-bearing material which, in one aspect comprises forming a mixture of a carbonaceous reducing agent and a slag comprising the aluminum-bearing material, the alkaline earth metal compound; forming, at a first temperature, an alloy containing impurities in the slag; removing the alloy containing the impurities from the slag; and then heating the slag to a higher temperature to form the alkaline earth metal aluminide. The alkaline earth metal compound used in the process may comprise calcium carbide. Alternatively, both the alkaline earth metal compound and the aluminum-bearing material may be obtained using a calcium aluminate slag such as a byproduct from the steel industry. The calcium aluminate slag is purified in a preliminary step to remove silicon by alloying it with iron and then removing a ferrosilicon alloy formed in this step. Byproducts formed during the reactions may be recycled back if desired.Either metallic aluminum, the alkaline earth metal, or both may be recovered from the aluminide material using, respectively a halide, a sulfurous, or a nitrogen stripping agent, or by reducing both metals in an electrolytic reduction cell. The alkaline earth metal aluminide may also be used as a reducing agent to recover other metals such as magnesium oxide by reduction from their respective compounds.

摘要翻译： 公开了一种改进的方法，用于从含铝材料碳热还原生产碱土金属铝化物，其一方面包括形成碳质还原剂和包含含铝材料，碱土金属化合物的炉渣的混合物; 在第一温度下，在炉渣中形成含有杂质的合金; 从炉渣中除去含有杂质的合金; 然后将炉渣加热到更高的温度以形成碱土金属铝化物。 该方法中使用的碱土金属化合物可以包括碳化钙。 或者，碱土金属化合物和含铝材料都可以使用诸如来自钢铁工业的副产物的铝酸钙渣来获得。 在预备步骤中，将铝酸钙炉渣纯化，通过与铁合金除去硅，然后除去在该步骤中形成的硅铁合金。 如果需要，在反应期间形成的副产物可以再循环回来。 可以使用卤化物，亚硫酸或氮气剥离剂，或通过还原电解还原电池中的两种金属，从铝化物材料中回收金属铝，碱土金属或二者。 也可以使用碱土金属铝化物作为还原剂，从其各自的化合物中还原回收其它金属如氧化镁。

公开(公告)号：US4765831A

公开(公告)日：1988-08-23

申请号：US946079

申请日：1986-12-24

申请人： C. Norman Cochran ,  Melvin H. Brown

发明人： C. Norman Cochran ,  Melvin H. Brown

IPC分类号： C22B7/04 ,  C22B21/00 ,  C22B21/02 ,  C22B26/20 ,  C22B26/22 ,  C22B26/10

CPC分类号： C22B26/20 ,  C22B21/0053 ,  C22B21/02 ,  C22B26/22 ,  C22B7/04 ,  Y02P10/212

摘要： An improved process is disclosed for carbothermically producing an alkaline earth metal aluminide from an aluminum-bearing material which, in one aspect comprises forming a mixture of a carbonaceous reducing agent and a slag comprising the aluminum-bearing material, the alkaline earth metal compound; forming, at a first temperature, an alloy containing impurities in the slag; removing the alloy containing the impurities from the slag; and then heating the slag to a higher temperature to form the alkaline earth metal aluminide. The alkaline earth metal compound used in the process may comprise calcium carbide. Alternatively, both the alkaline earth metal compound and the aluminum-bearing material may be obtained using a calcium aluminate slag such as a byproduct from the steel industry. The calcium aluminate slag is purified in a preliminary step to remove silicon by alloying it with iron and then removing a ferrosilicon alloy formed in this step. Byproducts formed during the reactions may be recycled back if desired.Either metallic aluminum, the alkaline earth metal, or both may be recovered from the aluminide material using, respectively a halide, a sulfurous, or a nitrogen stripping agent, or by reducing both metals in an electrolytic reduction cell. The alkaline earth metal aluminide may also be used as a reducing agent to recover other metals such as magnesium oxide by reduction from their respective compounds.

摘要翻译： 公开了一种改进的方法，用于从含铝材料碳热还原生产碱土金属铝化物，其一方面包括形成碳质还原剂和包含含铝材料，碱土金属化合物的炉渣的混合物; 在第一温度下，在炉渣中形成含有杂质的合金; 从炉渣中除去含有杂质的合金; 然后将炉渣加热到更高的温度以形成碱土金属铝化物。 该方法中使用的碱土金属化合物可以包括碳化钙。 或者，碱土金属化合物和含铝材料都可以使用诸如来自钢铁工业的副产物的铝酸钙渣来获得。 在预备步骤中，将铝酸钙炉渣纯化，通过与铁合金除去硅，然后除去在该步骤中形成的硅铁合金。 如果需要，在反应期间形成的副产物可以再循环回来。 可以使用卤化物，亚硫酸或氮气剥离剂，或通过还原电解还原电池中的两种金属，从铝化物材料中回收金属铝，碱土金属或二者。 也可以使用碱土金属铝化物作为还原剂，从其各自的化合物中还原回收其它金属如氧化镁。

公开(公告)号：US4770696A

公开(公告)日：1988-09-13

申请号：US946001

申请日：1986-12-24

申请人： Melvin H. Brown ,  C. Norman Cochran ,  Jagdish C. Agarwal

发明人： Melvin H. Brown ,  C. Norman Cochran ,  Jagdish C. Agarwal

IPC分类号： C22B21/00 ,  C22B21/06

CPC分类号： C22B21/0053

摘要： An improved process is disclosed for carbothermically producing an alkaline earth metal aluminide from an aluminum-bearing material which, in one aspect comprises forming a mixture of a carbonaceous reducing agent and a slag comprising the aluminum-bearing material, the alkaline earth metal compound; forming, at a first temperature, an alloy containing impurities in the slag; removing the alloy containing the impurities from the slag; and then heating the slag to a higher temperature to form the alkaline earth metal aluminide. The alkaline earth metal compound used in the process may comprise calcium carbide. Alternatively, both the alkaline earth metal compound and the aluminum-bearing material may be obtained using a calcium aluminate slag such as a byproduct from the steel industry. The calcium aluminate slag is purified in a preliminary step to remove silicon by alloying it with iron and then removing a ferrosilicon alloy formed in this step. Byproducts formed during the reactions may be recycled back if desired.Either metallic aluminum, the alkaline earth metal, or both may be recovered from the aluminide material using, respectively a halide, a sulfurous, or a nitrogen stripping agent, or by reducing both metals in an electrolytic reduction cell. The alkaline earth metal aluminide may also be used as a reducing agent to recover other metals such as magnesium oxide by reduction from their respective compounds.

摘要翻译： 公开了一种改进的方法，用于从含铝材料碳热还原生产碱土金属铝化物，其一方面包括形成碳质还原剂和包含含铝材料，碱土金属化合物的炉渣的混合物; 在第一温度下，在炉渣中形成含有杂质的合金; 从炉渣中除去含有杂质的合金; 然后将炉渣加热到更高的温度以形成碱土金属铝化物。 该方法中使用的碱土金属化合物可以包括碳化钙。 或者，碱土金属化合物和含铝材料都可以使用诸如来自钢铁工业的副产物的铝酸钙渣来获得。 在预备步骤中，将铝酸钙炉渣纯化，通过与铁合金除去硅，然后除去在该步骤中形成的硅铁合金。 如果需要，在反应期间形成的副产物可以再循环回来。 可以使用卤化物，亚硫酸或氮气剥离剂，或通过还原电解还原电池中的两种金属，从铝化物材料中回收金属铝，碱土金属或二者。 也可以使用碱土金属铝化物作为还原剂，从其各自的化合物中还原回收其它金属如氧化镁。

公开(公告)号：US4724054A

公开(公告)日：1988-02-09

申请号：US946005

申请日：1986-12-24

申请人： Melvin H. Brown ,  C. Norman Cochran

发明人： Melvin H. Brown ,  C. Norman Cochran

IPC分类号： C22B5/10 ,  C22B7/04 ,  C22B21/02 ,  C22B21/04 ,  C22B26/20 ,  C25C3/06

CPC分类号： C22B26/20 ,  C22B21/02 ,  C22B21/04 ,  C22B5/10 ,  C22B7/04 ,  C25C3/06 ,  Y02P10/212

摘要： An improved process is disclosed for carbothermically producing an alkaline earth metal aluminide from an aluminum-bearing material which, in one aspect comprises forming a mixture of a carbonaceous reducing agent and a slag comprising the aluminum-bearing material, the alkaline earth metal compound, forming, at a first temperature, an alloy containing impurities in the slag; removing the alloy containing the impurities from the slag; and then heating the slag to a higher temperature to form the alkaline earth metal aluminide. The alkaline earth metal compound used in the process may comprise calcium carbide. Alternatively, both the alkaline earth metal compound and the aluminum-bearing material may be obtained using a calcium aluminate slag such as a byproduct from the steel industry. The calcium aluminate slag is purified in a preliminary step to remove silicon by alloying it with iron and then removing a ferrosilicon alloy formed in this step. Byproducts formed during the reactions may be recycled back if desired.Either metallic aluminum, the alkaline earth metal, or both may be recovered from the aluminide material using, respectively a halide, a sulfurous, or a nitrogen stripping agent, or by reducing both metals in an electrolytic reduction cell. The alkaline earth metal aluminide may also be used as a reducing agent to recover other metals such as magnesium oxide by reduction from their respective compounds.

摘要翻译： 公开了一种改进的方法，用于从含铝材料中碳热还原生产碱土金属铝化物，其一方面包括形成碳质还原剂和包含含铝材料，碱土金属化合物的成渣的混合物，形成 在第一温度下，在炉渣中含有杂质的合金; 从炉渣中除去含有杂质的合金; 然后将炉渣加热到更高的温度以形成碱土金属铝化物。 该方法中使用的碱土金属化合物可以包括碳化钙。 或者，碱土金属化合物和含铝材料都可以使用诸如来自钢铁工业的副产物的铝酸钙渣来获得。 在预备步骤中，将铝酸钙炉渣纯化，通过与铁合金除去硅，然后除去在该步骤中形成的硅铁合金。 如果需要，在反应期间形成的副产物可以再循环回来。 可以使用卤化物，亚硫酸或氮气剥离剂，或通过还原电解还原电池中的两种金属，从铝化物材料中回收金属铝，碱土金属或二者。 也可以使用碱土金属铝化物作为还原剂，从其各自的化合物中还原回收其它金属如氧化镁。

公开(公告)号：US4812168A

公开(公告)日：1989-03-14

申请号：US946200

申请日：1986-12-24

申请人： C. Norman Cochran ,  Melvin H. Brown

发明人： C. Norman Cochran ,  Melvin H. Brown

IPC分类号： C22B7/04 ,  C22B21/04 ,  C22B26/20 ,  C22C1/00

CPC分类号： C22B26/20 ,  C22B21/04 ,  C22B7/04 ,  C22C1/00 ,  Y02P10/212

摘要： An improved process is disclosed for carbothermically producing an alkaline earth metal aluminide from an aluminum-bearing material which, in one aspect comprises forming a mixture of a carbonaceous reducing agent and a slag comprising the aluminum-bearing material, the alkaline earth metal compound; forming, at a first temperature, an alloy containing impurities in the slag; removing the alloy containing the impurities from the slag; and then heating the slag to a higher temperature to form the alkaline earth metal aluminide. The alkaline earth metal compound used in the process may comprise calcium carbide. Alternatively, both the alkaline earth metal compound and the aluminum-bearing material may be obtained using a calcium aluminate slag such as a byproduct from the steel industry. The calcium aluminate slag is purified in a preliminary step to remove silicon by alloying it with iron and them removing a ferrosilicon alloy formed in this step. Byproducts formed during the reactions may be recycled back if desired.Either metallic aluminum, the alkaline earth metal, or both may be recovered from the aluminide material using, respectively a halide, a sulfurous, or a nitrogen stripping agent, or by reducing both metals in an electrolytic reduction cell. The alkaline earth metal aluminide may also be used as a reducing agent to recover other metals such as magnesium oxide by reduction from their respective compounds.

摘要翻译： 公开了一种改进的方法，用于从含铝材料碳热还原生产碱土金属铝化物，其一方面包括形成碳质还原剂和包含含铝材料，碱土金属化合物的炉渣的混合物; 在第一温度下，在炉渣中形成含有杂质的合金; 从炉渣中除去含有杂质的合金; 然后将炉渣加热到更高的温度以形成碱土金属铝化物。 该方法中使用的碱土金属化合物可以包括碳化钙。 或者，碱土金属化合物和含铝材料都可以使用诸如来自钢铁工业的副产物的铝酸钙渣来获得。 在预备步骤中，将铝酸钙炉渣纯化，以通过与铁合金除去硅，并除去在该步骤中形成的硅铁合金。 如果需要，在反应期间形成的副产物可以再循环回来。 可以使用卤化物，亚硫酸或氮气剥离剂，或通过还原电解还原电池中的两种金属，从铝化物材料中回收金属铝，碱土金属或二者。 也可以使用碱土金属铝化物作为还原剂，从其各自的化合物中还原回收其它金属如氧化镁。

公开(公告)号：US4769069A

公开(公告)日：1988-09-06

申请号：US946199

申请日：1986-12-24

申请人： C. Norman Cochran ,  Melvin H. Brown ,  David H. De Young

发明人： C. Norman Cochran ,  Melvin H. Brown ,  David H. De Young

IPC分类号： C22B21/02 ,  C22B21/04 ,  C22B26/20 ,  C22B26/22

CPC分类号： C22B26/22 ,  C22B21/02 ,  C22B21/04 ,  C22B26/20 ,  Y02P10/212

摘要： An improved process is disclosed for carbothermically producing an alkaline earth metal aluminide from an aluminum-bearing material which, in one aspect comprises forming a mixture of a carbonaceous reducing agent and a slag comprising the aluminum-bearing material, the alkaline earth metal compound; forming, at a first temperature, an alloy containing impurities in the slag; removing the alloy containing the impurities from the slag; and then heating the slag to a higher temperature to form the alkaline earth metal aluminide. The alkaline earth metal compound used in the process may comprise calcium carbide. Alternatively, both the alkaline earth metal compound and the aluminum-bearing material may be obtained using a calcium aluminate slag such as a byproduct from the steel industry. The calcium aluminate slag is purified in a preliminary step to remove silicon by alloying it with iron and then removing a ferrosilicon alloy formed in this step. Byproducts formed during the reactions may be recycled back if desired.Either metallic aluminum, the alkaline earth metal, or both may be recovered from the aluminide material using, respectively a halide, a sulfurous, or a nitrogen stripping agent, or by reducing both metals in an electrolytic reduction cell. The alkaline earth metal aluminide may also be used as a reducing agent to recover other metals such as magnesium oxide by reduction from their respective compounds.

摘要翻译： 公开了一种改进的方法，用于从含铝材料碳热还原生产碱土金属铝化物，其一方面包括形成碳质还原剂和包含含铝材料，碱土金属化合物的炉渣的混合物; 在第一温度下，在炉渣中形成含有杂质的合金; 从炉渣中除去含有杂质的合金; 然后将炉渣加热到更高的温度以形成碱土金属铝化物。 该方法中使用的碱土金属化合物可以包括碳化钙。 或者，碱土金属化合物和含铝材料都可以使用诸如来自钢铁工业的副产物的铝酸钙渣来获得。 在预备步骤中，将铝酸钙炉渣纯化，通过与铁合金除去硅，然后除去在该步骤中形成的硅铁合金。 如果需要，在反应期间形成的副产物可以再循环回来。 可以使用卤化物，亚硫酸或氮气剥离剂，或通过还原电解还原电池中的两种金属，从铝化物材料中回收金属铝，碱土金属或二者。 也可以使用碱土金属铝化物作为还原剂，从其各自的化合物中还原回收其它金属如氧化镁。

公开(公告)号：US4769068A

公开(公告)日：1988-09-06

申请号：US946003

申请日：1986-12-24

申请人： C. Norman Cochran ,  Melvin H. Brown ,  Siba P. Ray

发明人： C. Norman Cochran ,  Melvin H. Brown ,  Siba P. Ray

IPC分类号： C22B21/02 ,  C22B21/04 ,  C22B26/20 ,  C22B26/22

CPC分类号： C22B26/22 ,  C22B21/02 ,  C22B21/04 ,  C22B26/20 ,  Y02P10/212

摘要： An improved process is disclosed for carbothermically producing an alkaline earth metal aluminide from an aluminum-bearing material which, in one aspect comprises forming a mixture of a carbonaceous reducing agent and a slag comprising the aluminum-bearing material, the alkaline earth metal compound; forming, at a first temperature, an alloy containing impurities in the slag; removing the alloy containing the impurities from the slag; and then heating the slag to a higher temperature to form the alkaline earth metal aluminide. The alkaline earth metal compound used in the process may comprise calcium carbide. Alternatively, both the alkaline earth metal compound and the aluminum-bearing material may be obtained using a calcium aluminate slag such as a byproduct from the steel industry. The calcium aluminate slag is purified in a preliminary step to remove silicon by alloying it with iron and then removing a ferrosilicon alloy formed in this step. Byproducts formed during the reactions may be recycled back is desired.Either metallic aluminum, the alkaline earth metal, or both may be recovered from the aluminide material using, respectively a halide, a sulfurous, or a nitrogen stripping agent, or by reducing both metals in an electrolytic reduction cell. The alkaline earth metal aluminide may also be used as a reducing agent to recover other metals such as magnesium oxide by reduction from their respective compounds.

摘要翻译： 公开了一种改进的方法，用于从含铝材料碳热还原生产碱土金属铝化物，其一方面包括形成碳质还原剂和包含含铝材料，碱土金属化合物的炉渣的混合物; 在第一温度下，在炉渣中形成含有杂质的合金; 从炉渣中除去含有杂质的合金; 然后将炉渣加热到更高的温度以形成碱土金属铝化物。 该方法中使用的碱土金属化合物可以包括碳化钙。 或者，碱土金属化合物和含铝材料都可以使用诸如来自钢铁工业的副产物的铝酸钙渣来获得。 在预备步骤中，将铝酸钙炉渣纯化，通过与铁合金除去硅，然后除去在该步骤中形成的硅铁合金。 在反应期间形成的副产物可以被再循环回来。 可以使用卤化物，亚硫酸或氮气剥离剂，或通过还原电解还原电池中的两种金属，从铝化物材料中回收金属铝，碱土金属或二者。 也可以使用碱土金属铝化物作为还原剂，从其各自的化合物中还原回收其它金属如氧化镁。

公开(公告)号：US4765832A

公开(公告)日：1988-08-23

申请号：US946004

申请日：1986-12-24

申请人： Melvin H. Brown ,  C. Norman Cochran ,  Noel Jarrett

发明人： Melvin H. Brown ,  C. Norman Cochran ,  Noel Jarrett

IPC分类号： C22B7/04 ,  C22B21/00 ,  C22B21/02 ,  C22B26/20 ,  C22B26/22 ,  C22B21/06

CPC分类号： C22B7/04 ,  C22B21/0053 ,  C22B21/02 ,  C22B26/20 ,  C22B26/22 ,  Y02P10/212

摘要： An improved process is disclosed for carbothermically producing an alkaline earth metal aluminide from an aluminum-bearing material which, in one aspect comprises forming a mixture of a carbonaceous reducing agent and a slag comprising the aluminum-bearing material, the alkaline earth metal compound; forming, at a first temperature, an alloy containing impurities in the slag; removing the alloy containing the impurities from the slag; and then heating the slag to a higher temperature to form the alkaline earth metal aluminide. The alkaline earth metal compound used in the process may comprise calcium carbide. Alternatively, both the alkaline earth metal compound and the aluminum-bearing material may be obtained using a calcium aluminte slag such as a byproduct from the steel industry. The calcium aluminate slag is purified in a preliminary step to remove silicon by alloying it with iron and then removing a ferrosilicon alloy formed in this step. Byproducts formed during the reactions may be recycled back if desired.Either metallic aluminum, the alkaline earth metal, or both may be recovered from the aluminide material using, respectively a halide, a sulfurous, or a nitrogen stripping agent, or by reducing both metals in an electrolytic reduction cell. The alkaline earth metal aluminide may also be used as a reducing agent to recover other metals such as magnesium oxide by reduction from their respective compounds.

摘要翻译： 公开了一种改进的方法，用于从含铝材料碳热还原生产碱土金属铝化物，其一方面包括形成碳质还原剂和包含含铝材料，碱土金属化合物的炉渣的混合物; 在第一温度下，在炉渣中形成含有杂质的合金; 从炉渣中除去含有杂质的合金; 然后将炉渣加热到更高的温度以形成碱土金属铝化物。 该方法中使用的碱土金属化合物可以包括碳化钙。 或者，可以使用诸如来自钢铁工业的副产物的钙铝渣来获得碱土金属化合物和含铝材料。 在预备步骤中，将铝酸钙炉渣纯化，通过与铁合金除去硅，然后除去在该步骤中形成的硅铁合金。 如果需要，在反应期间形成的副产物可以再循环回来。 可以使用卤化物，亚硫酸或氮气剥离剂，或通过还原电解还原电池中的两种金属，从铝化物材料中回收金属铝，碱土金属或二者。 也可以使用碱土金属铝化物作为还原剂，从其各自的化合物中还原回收其它金属如氧化镁。

公开(公告)号：US4735654A

公开(公告)日：1988-04-05

申请号：US946002

申请日：1986-12-24

申请人： C. Norman Cochran ,  Melvin H. Brown

发明人： C. Norman Cochran ,  Melvin H. Brown

IPC分类号： C22B5/04 ,  C22B21/02 ,  C22B26/10 ,  C22B26/12 ,  C22B26/20 ,  C22B26/22 ,  C22B26/00

CPC分类号： C22B5/04 ,  C22B21/02 ,  C22B26/10 ,  C22B26/12 ,  C22B26/20 ,  C22B26/22 ,  Y02P10/212

摘要： An improved process is disclosed for carbothermically producing an alkaline earth metal aluminide from an aluminum-bearing material which, in one aspect comprises forming a mixture of a carbonaceous reducing agent and a slag comprising the aluminum-bearing material, the alkaline earth metal compound; forming, at a first temperature, an alloy containing impurities in the slag; removing the alloy containing the impurities from the slag; and then heating the slag to a higher temperature to form the alkaline earth metal aluminide. The alkaline earth metal compound used in the process may comprise calcium carbide. Alternatively, both the alkaline earth metal compound and the aluminum-bearing material may be obtained using a calcium aluminate slag such as a byproduct from the steel industry. The calcium aluminate slag is purified in a preliminary step to remove silicon by alloying it with iron and then removing a ferrosilicon alloy formed in this step. Byproducts formed during the reactions may be recycled back if desired.Either metallic aluminum, the alkaline earth metal, or both may be recovered from the aluminide material using, respectively a halide, a sulfurous, or a nitrogen stripping agent, or by reducing both metals in an electrolytic reduction cell. The alkaline earth metal aluminide may also be used as a reducing agent to recover other metals such as magnesium oxide by reduction from their respective compounds.

摘要翻译： 公开了一种改进的方法，用于从含铝材料碳热还原生产碱土金属铝化物，其一方面包括形成碳质还原剂和包含含铝材料，碱土金属化合物的炉渣的混合物; 在第一温度下，在炉渣中形成含有杂质的合金; 从炉渣中除去含有杂质的合金; 然后将炉渣加热到更高的温度以形成碱土金属铝化物。 该方法中使用的碱土金属化合物可以包括碳化钙。 或者，碱土金属化合物和含铝材料都可以使用诸如来自钢铁工业的副产物的铝酸钙渣来获得。 在预备步骤中，将铝酸钙炉渣纯化，通过与铁合金除去硅，然后除去在该步骤中形成的硅铁合金。 如果需要，在反应期间形成的副产物可以再循环回来。 可以使用卤化物，亚硫酸或氮气剥离剂，或通过还原电解还原电池中的两种金属，从铝化物材料中回收金属铝，碱土金属或二者。 也可以使用碱土金属铝化物作为还原剂，从其各自的化合物中还原回收其它金属如氧化镁。

公开(公告)号：US4232615A

公开(公告)日：1980-11-11

申请号：US047004

申请日：1979-06-11

申请人： Melvin H. Brown

发明人： Melvin H. Brown

IPC分类号： F23C6/04 ,  F23K1/02 ,  F23N3/00

CPC分类号： F23K1/02 ,  F23C6/04

摘要： A method is disclosed for burning a pulverized carbonaceous material containing sulfur and ash. According to this method, a slurry is formed containing the carbonaceous material, water and a reagent adapted to react during combustion with the sulfur in the material. The slurry is burned in a first stage with less than 100% theoretical air and preferably at a temperature below about 1100.degree. C. The products of combustion from the first stage are removed to a second stage and burned with additional air.

摘要翻译： 公开了一种用于燃烧含硫和灰分的粉碎碳质材料的方法。 根据该方法，形成含有碳质材料，水和适于在燃烧过程中与材料中的硫反应的试剂的浆料。 浆料在第一阶段以小于100％的理论空气燃烧，优选在低于约1100℃的温度下燃烧。来自第一阶段的燃烧产物被除去到第二阶段，并用额外的空气燃烧。