Processing technique for chloridized dust collection slag
A technology for processing and collecting dust and slag, applied in titanium halide and other directions, can solve problems such as restricting the development of titanium industry, difficult design of new titanium plants, pollution, etc., and achieve the effect of improving working conditions, solving environmental protection problems and improving ecological environment.
Inactive Publication Date: 2010-06-23
GUIYANG AL-MG DESIGN & RES INST
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Problems solved by technology
This treatment method pollutes the plant environment and the crops in the sewage basin and the organisms in the river basin
This pollution problem has caused the surrounding farmers to reduce their crops and income, and to sue the factory for compensation. This is a headache for the titanium factory and a problem in the design of the new titanium factory.
If the problem of dust collection and slag disposal cannot be solved reasonably, it will restrict the development of China's titanium industry in the future
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Embodiment Construction
[0016] Embodiments of the present invention: the schematic diagram of the chlorination dust collection slag treatment process is as follows figure 1 As shown, open the flapper valve on the pipeline, so that all the condensed dust residue in the condenser flows into the beating tank, then close the flapper valve, and add water (this part of water can be tap water or titanium can be added to the beating tank). The production water in the production process of the factory), and at the same time start the agitator in the beating tank to stir the dust residue and water into a slurry. The steam and part of the hydrogen chloride gas generated during the pulping process are passed to the neutralization treatment of the chlorination tail gas to recover hydrochloric acid; the prepared slurry is pumped to the drum filter with a mortar for liquid-solid separation. Since the required vacuum degree is 500 -600Pa, so the general water ring vacuum pump can meet the requirements;
[0017] The...
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The invention discloses a processing technique for chloridized dust collection slag, comprising the following steps: adding water to the chloridized dust collection slag and preparing the mixture into size; injecting steam and part of hydrogen chloride produced in the process of pulping to chloridized tail gas for neutralizing treatment; using a mortar pump to convey made size to a rotating drum type filter for filtering and liquid-solid separation; using filter cake produced from the liquid-solid separation as road filler or abandoning the filter cake to a slag yard; conveying the filter liquid to a sewage processing system for neutralization and discharging the sewage after reaching emission standards.In the invention, as reasonable processing technology for the chloridized dust collection slag is designed, the problem that hydrolyzed solids block the sewage ditch is solved and ecological environmental in the plant area and the sewage drainage basin is improved.The processing technique is completed in a whole set of equipment system, so that working conditions are greatly improved.In addition, the long-standing problem in processing and designing dust collection slag by a titanium plant is resolved, and environmental protection concerning processing technique of the dust collection slag is also resolved, thus creating wide prospect for the development of titanium industry in China.
Description
technical field [0001] The invention relates to a process for treating dust-collecting slag condensed in a dust-collecting condenser during the production process of titanium tetrachloride, and belongs to the technical field of treating chlorinated dust-collecting slag produced by titanium tetrachloride. Background technique [0002] Titanium tetrachloride is the raw material for the production of titanium sponge and titanium dioxide by chloride method. It is prepared by chlorinating titanium-rich materials (high titanium slag, rutile) with chlorine gas in the presence of carbon. At present, the methods for industrial production of titanium tetrachloride include fixed layer chlorination, molten salt chlorination and boiling chlorination. No matter which chlorination method produces titanium tetrachloride, the output from the chlorination furnace is a mixed gas, which is generally called furnace gas. In addition to the main titanium tetrachloride gas in the furnace gas, the...
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IPC IPC(8): C01G23/02
Inventor 杨仁牧温耀荣
Owner GUIYANG AL-MG DESIGN & RES INST