Hyperbaric oxygen acid leaching process for cogenerating calcium sulfate whiskers from copper-sulphide ores
A technology of calcium sulfate whiskers and copper sulfide ore, applied in the direction of improving process efficiency, etc., can solve problems such as waste of resource utilization, inability to convert calcium oxide, etc., to achieve comprehensive utilization and increase production output value
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Embodiment 1
[0011] Embodiment 1: technical process such as figure 1 As shown, the copper sulfide ore is crushed, ground, and mixed with water to form a slurry. The fineness of the ore grinding is -200 mesh, the content is 95%, and the mass concentration of the slurry is 20%. Hydrochloric acid and sulfuric acid are added to the slurry to adjust the slurry. The molar concentration of hydrochloric acid in the medium is 0.2mol / l, the molar concentration of sulfuric acid is 0.8mol / l, and the oxygen pressure is kept at 1.5Mpa for leaching in an oxygen environment, the leaching temperature is 95°C, and the leaching time is 2 hours; after the leaching is completed, heat filter, The filtrate after hot filtration undergoes natural cooling and crystallization, and is filtered into copper salt solution and filter residue; the copper salt solution enters the process of extracting and producing cathode copper, and the filter residue is dried at 100°C to become calcium sulfate whiskers.
[0012] The per...
Embodiment 2
[0014] Embodiment 2: technical process such as figure 1 As shown, the copper sulfide ore is crushed, ground, and pulped to become pulp. The fineness during grinding is -200 mesh, the content is 98%, and the mass concentration of the pulp is 15%. Hydrochloric acid and sulfuric acid are added to the pulp to adjust the pulp. The molar concentration of hydrochloric acid is 0.4mol / l, the molar concentration of sulfuric acid is 1.5mol / l, keep the oxygen pressure at 2.0Mpa for leaching in an oxygen environment, the leaching temperature is 100°C, and the leaching time is 1.5 hours; The filtered filtrate undergoes natural cooling and crystallization, and is filtered into copper salt solution and filter residue; the copper salt solution enters the process of extracting and producing cathode copper, and the filter residue becomes calcium sulfate whisker after drying at 110°C.
[0015] The performance detection of present embodiment calcium sulfate whisker: adopt STM6 measuring microscope...
Embodiment 3
[0017] Embodiment 3: technological process such as figure 1 As shown, the copper sulfide ore is crushed, ground, and mixed with water to become pulp. The fineness during grinding is -200 mesh, the content is 100%, and the mass concentration of the pulp is 18%. Add hydrochloric acid and sulfuric acid to the pulp to adjust the pulp The molar concentration of hydrochloric acid in the medium is 0.5mol / l, the molar concentration of sulfuric acid is 2.0mol / l, and the oxygen pressure is kept at 2.5Mpa for leaching in an oxygen environment, the leaching temperature is 110°C, and the leaching time is 1 hour; The filtrate after hot filtration undergoes natural cooling and crystallization, and is filtered into copper salt solution and filter residue; the copper salt solution enters the process of extracting and producing cathode copper, and the filter residue is dried at 105°C to become a calcium sulfate whisker product.
[0018] The performance detection of present embodiment calcium su...
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Abstract
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