Low pressure leaching process of coal-bearing kaolin powder for producing industrial aluminum sulfate
An industrial sulfuric acid and coal-based technology, applied in aluminum sulfate, aluminum-sulfur compounds, etc., can solve the problems of poor mixing of coal gangue raw powder and sulfuric acid liquid, failure to take corresponding measures for anti-corrosion technology, and difficulty in ensuring product quality. Curing time, solving anti-corrosion problems, and enhancing bond strength
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[0020] The following provides the best embodiment of the present invention
[0021] Raw ore that will meet the quality requirements ( Content ≥34%, Content ≤2.0%) After being crushed by a jaw crusher to a lumpiness ≤2.0cm, it is ground by a Raymond machine (4R3216 grinder) with a fineness of 150-200 mesh. Method of feeding materials into the silo. When preparing the slurry, the mineral material is measured by the electromagnetic hanging bucket, and the water is measured by the level gauge. After the weight ratio of the two is prepared at a concentration of 55-65% in the mixing tank, the air compressor is turned on and pressed into the lead-lined KPI cement lining Inside the reactor of graphite bricks.
[0022] Mix the pulp in the reactor with a certain amount of sulfuric acid, add 610kg of sulfuric acid for every 0.55kg of pulp, (the quality of sulfuric acid should meet the requirements of the first-class international industry), and pass it into steam for preheating for activat...
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