Oil-carbon-sulfur removing high-alkali sodium roasting process

Abstract

The invention discloses an oil-carbon-sulfur removing high-alkali sodium roasting process. The process comprises the following steps: dried leaching slag, oil-low molybdenum-low vanadium contained raw materials, coke powder, low molybdenum-low vanadium contained raw materials, molybdenum-vanadium contained dense pulp alkali liquid and alkali are fed in a rake stirrer, and sodium carbonate is added for uniform stirring to place by 24 hours to obtain a mixture A; the mixture A is added in a rotary kiln roasting furnace for roasting to obtain a roasted material B; the roasted material B is added in a rotary leaching machine with leaching liquid for leaching to obtain leaching suspension C and solution D; and the leaching suspension C and the solution D are further separated for filtering to obtain a final product-aluminum hydroxide. The oil-carbon-sulfur removing high-alkali sodium roasting process finishes roasting by one step; and compared with the prior art, the process saves the time, the labors and the equipment investment, effectively reduces personal investment, reduces the production cost, and realizes full reclamation, reduction and harmlessness in the raw material treatment process.

Description

technical field [0001] The invention relates to the field of roasting technology, in particular to a deoiling, decarburizing, desulfurizing and high-alkali sodium roasting process. Background technique [0002] With the continuous development of industrialization, more and more roasting processes have been applied. The existing deoiling, decarbonizing and desulfurizing roasting process adds auxiliary materials such as limestone, fluorite, silica, coke powder, sodium carbonate, etc., and during the roasting process, the calorific value contained in the raw material itself cannot meet all the heat required by the production process , therefore, a large amount of natural gas needs to be supplemented to maintain the continuation of the roasting production, resulting in a huge investment in the production process; The leaching slag obtained after leaching and separation is processed by high-temperature melting and solidification, which includes the high-temperature melting separ...

AI Technical Summary

Problems solved by technology

The existing deoiling, decarbonizing and desulfurizing roasting process adds auxiliary materials such as limestone, fluorite, silica, coke powder, sodium carbonate, etc., and during the roasting process, the calorific value contained in the raw material itself cannot meet all the heat required by the production process , therefore, a large amount of natural gas needs to be supplemented to maintain the continuation of the roasting production, resulting in a huge investment in the production process; The leaching slag obtained after leaching and separation is processed by high-temperature melting and solidification, which includes the high-temperature melting separation and purification process of the alloy. This process requires expensive equipment investment and a huge power consumption; not only that , the existing roasting process for deoiling, decarbonizing and desulfurizing has complex operation, large amount of personnel input, high production cost, low conversion rate of raw materials and insufficient utilization of raw materials in the production process, resulting in serious waste of resources and environmental pollution

With the increasing scarcity of social energy resources and the increasing emphasis on people's living environment by social environmental protection organizations in various countries, the existing deoiling, decarbonization, desulfurization and roasting process can no longer meet the needs of current production. Therefore, it is urgent to propose a A new low-input, pollution-free roasting process for deoiling, decarbonizing and desulfurizing