Method for treating waste ferrous sulfate with sulfuric acid sand acid plant
A technology of ferrous sulfate and sulfur fine sand, applied in chemical instruments and methods, sulfur compounds, inorganic chemistry, etc., can solve the problems of environmental pollution, no place to stack, etc., and achieve high economic benefits
Active Publication Date: 2017-02-22
荆门新洋丰中磷肥业有限公司
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Problems solved by technology
[0005] The purpose of the present invention is exactly aimed at at present production titanium dioxide can by-product solid waste ferrous sulfate, along with the carrying out of production, the waste ferrous sulfate of by-product is more and more, even has nowhere to pile up, pollutes the deficiency of environmental protection, And provide a kind of method utilizing sulfur fine sand acid plant to process waste ferrous sulfate
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Embodiment Construction
[0009] Mix ferrous sulfate and sulfur fine sand evenly at a volume ratio of 1:14-16, and then send them to the dryer for drying. After the dried materials are screened, they are sent to the fluidized bed furnace for roasting. The roasting temperature is 950℃, roasting time 5-10 seconds, the sulfur dioxide produced by roasting is catalyzed by the converter to form sulfur trioxide, and the sulfur trioxide reacts with water to form sulfuric acid. The high-temperature furnace gas produced is cooled and dry-purified by waste pot, cyclone dust collector and electrostatic precipitator, then wet-purified by power wave and packed tower, and the furnace gas is dried by 93% sulfuric acid in the drying tower The sulfur dioxide fan is used as power, and after the first, second and third stages of catalytic conversion in the converter, about 95% of the sulfur dioxide in the furnace gas is converted into sulfur trioxide, which is absorbed by 98% of the concentrated sulfuric acid in the first ...
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The invention discloses a method for treating waste ferrous sulphate by a sulfide enriched concentrate-based acid making device. The method comprises that ferrous sulphate and sulfide enriched concentrate are blended according to a volume ratio of 1: 14-16 to form a uniform mixture, the mixture is fed into a dryer, is dried and then is sieved, the sieved material are fed into a fluidized bed furnace and is roasted at a roasting temperature of 950 DEG C for 5-10s, sulfur dioxide produced by roasting undergoes a catalytic reaction to produce sulfur trioxide in a converter, and sulfur trioxide and water undergo a reaction to produce sulfuric acid. The method has the advantage that through the existing sulfide enriched concentrate-based acid making device, sulfide enriched concentrate and ferrous sulphate are blended according to a certain ratio and undergo a reaction to produce an acid and red slag as a by-product with iron content greater than or equal to 60% so that the waste ferrous sulphate is changed into valuables.
Description
technical field [0001] The invention relates to a method for treating waste ferrous sulfate. [0002] technical background [0003] The production of titanium dioxide will produce solid waste ferrous sulfate as a by-product. As the production progresses, the by-product ferrous sulfate will become more and more, and even have nowhere to pile up, polluting the environment. [0004] How to solve the problem of stacking waste ferrous sulfate and turn waste into treasure, the sulfuric acid plant boldly innovated, using the existing equipment, to try to blend a certain proportion of ferrous sulfate in the sulfur concentrate to make acid. Contents of the invention [0005] The purpose of the present invention is exactly aimed at at present production titanium dioxide can by-product solid waste ferrous sulfate, along with the carrying out of production, the waste ferrous sulfate of by-product is more and more, even has nowhere to pile up, pollutes the deficiency of environmental pr...
Claims
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IPC IPC(8): C01B17/76
Inventor 孙堃朱平赵新李功武王小伟杨帅
Owner 荆门新洋丰中磷肥业有限公司