Dezincification process for zinc-containing mash gas mud
A gas mud and zinc gas technology, which is applied in the field of zinc-containing gas mud dezincification process, can solve the problems of cumbersome, high cost, and large investment, and achieve the effects of large production capacity, reduced zinc content, and simple production process
Active Publication Date: 2010-10-13
鞍山钢铁集团耐火材料有限公司
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Problems solved by technology
[0002] From the perspective of saving resources, prolonging the life of the blast furnace and environmental protection, the metallurgical industry must recycle the gas sludge produced by the blast furnace, and send it to the blast furnace or converter as a raw material after treatment. The current method of processing gas sludge requires adding high-speed iron Dry powder, preforming, drying and other treatment processes; while the treatment of zinc-containing gas mud is more complicated, its treatment equipment needs to be equipped with mixers, dehydrators, compactors, rotary hearth furnaces, pellet cooling, etc. Its large investment and high cost
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[0013] The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing:
[0014] Taking the common tunnel kiln in the refractory industry as an example, the zinc-containing gas mud is put into the reaction tank 8, and the top of the reaction tank 8 is covered with a protective layer 9 to prevent the charcoal in the gas mud from burning, and to form a weak reduction in the reaction tank. atmosphere (such as figure 2 shown), the reaction tanks are placed on the kiln car 6, and the number of reaction tanks is different according to the cross-sectional area of the tunnel kiln. Depending on the size of the kiln car, in the present embodiment, each kiln car is placed in layers of 200 to 300 reaction tanks.
[0015] The heating method of blast furnace and coke oven mixed gas is adopted, and the tunnel kiln firing zone 3 combustion system is equipped with gas burners 4 on both side walls along the length of the tunnel, and the...
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Abstract
The invention discloses a process for removing zinc of zincous gas mud. The process is characterized in that a tunnel kiln is utilized to process the zincous gas mud; specific equipment comprises a tunnel kiln body, a kiln car and a reaction tank; the zincous gas mud is put to the reaction tank; the reaction tank is put on the kiln car; the kiln car runs in the tunnel kiln and passes through a preheating belt, a sintering belt and a cooling belt to complete the reduction process; under the condition of no addition of other compositions, the process utilizes the prior tunnel kiln in the refractory industry, uses the simple production process to independently process the zincous gas mud and effectively reduces the zinc content of the gas mud in order that the zinc content in the zincous gasmud is reduced from original 0.67 percent to less than 0.005 percent. The product is applied to the smelting of a blast furnace and reduces erosion to a blast furnace body, so as not to influence theservice life of the blast furnace; and the production process is simple and convenient, is suitable for processing mass zincous gas mud materials, and effectively reduces the zinc content of a zincous material.
Description
technical field [0001] The invention belongs to the comprehensive utilization in the iron and steel smelting process, relates to the treatment process of the dust sludge produced in the blast furnace smelting, in particular to a zinc-removing process of zinc-containing gas sludge. Background technique [0002] From the perspective of saving resources, prolonging the life of the blast furnace and environmental protection, the metallurgical industry must recycle the gas sludge produced by the blast furnace, and send it to the blast furnace or converter as a raw material after treatment. The current method of processing gas sludge requires adding high-speed iron Dry powder, preforming, drying and other treatment processes; while the treatment of zinc-containing gas mud is more complicated, its treatment equipment needs to be equipped with mixers, dehydrators, compactors, rotary hearth furnaces, pellet cooling, etc. Its investment is big, and cost is high. Contents of the inve...
Claims
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IPC IPC(8): C22B19/04C22B7/00
CPCY02P10/20
Inventor 邱明金佟新鲍士学王朝晖解金星韩功雨
Owner 鞍山钢铁集团耐火材料有限公司