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Process for preparing amino-sulfonic acid nickel by nickel sulfide concentrate

A technology of nickel sulfamate and nickel sulfide, applied in the directions of sulfamic acid, sulfur compound, inorganic chemistry, etc., can solve the problems of high cost of purification and decontamination treatment, difficult industrialization implementation, large loss of nickel, etc., and achieves easy industrialization. The effect of implementation, small investment and large nickel loss

Inactive Publication Date: 2008-03-05
YUNNAN TIN GROUP HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Chlorination leaching has high requirements on equipment, and it is difficult to realize industrialization; directly using sulfuric acid atmospheric pressure and pressurized combined leaching, it is easy to generate hydrogen sulfide gas, pollute the environment, a large amount of iron enters the solution (more than 80%), and the cost of purification and impurity removal High, large nickel loss

Method used

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  • Process for preparing amino-sulfonic acid nickel by nickel sulfide concentrate

Examples

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Effect test

example 1

[0018] In a 50 liter stainless steel pressurized reactor, put in 24 liters of water and 10 kg of wet nickel sulfide material, the main components (dry %) are: Ni21.27, Fe27.11, Mn0.016, Mg1.06, S29.95 , Ca<0.10, Co0.583, heat up to 95°C, feed industrial oxygen, control oxygen pressure 0.3Mpa, after 40 minutes, add 670 grams of ammonium sulfate, 250 milliliters of industrial nitric acid (63%), heat up to 95°C, pass Enter industrial oxygen, control the reaction pressure 1.0MPa, cool, filter and wash after 2 hours, and produce 31 liters of leachate (including washing water), and its composition is (g / L): Ni47.41, Fe14.11, Mg0.56, Co0.983. The output leaching residue is 5.3 kg (dry basis), containing Ni0.356%. The filter residue obtained by nitric acid pressure leaching and filtration is sent to the flotation system to recover elemental sulfur. Add 5.3 kg of potassium sulfate to the leaching solution in a 50-liter stirring tank, heat it to 85-90°C under normal pressure, and contr...

example 2

[0024] In a 50 liter stainless steel pressurized reactor, put in 24 liters of water and 10 kg of wet nickel sulfide material, the main components (dry %) are: Ni23.47, Fe26.51, Mn0.022, Mg2.24, S30.22 , Ca<0.10, Co0.604, heat up to 75°C, feed industrial oxygen, control oxygen pressure 0.3MPa, after 40 minutes, add 800 grams of ammonium sulfate, 600 ml of industrial nitric acid (63%), heat up to 80°C, pass Enter industrial oxygen, control the reaction pressure 1.0MPa, cool, filter and wash after 2 hours, and produce 31 liters of leachate (including washing water), and its composition is (g / L): Ni49.67, Fe15.31, Mg0.76, Co0.863. The output leaching residue is 5.5 kg (dry basis), containing Ni0.343%, and the filter residue obtained by nitric acid pressure leaching and filtration is sent to the flotation system to recover elemental sulfur. Add 5.7 kg of potassium sulfate to the leaching solution in a 50-liter stirring tank, heat it to 90-95 ° C under normal pressure, and control ...

example 3

[0030] In a 50 liter stainless steel pressurized reactor, put in 24 liters of water and 10 kg of wet nickel sulfide material, the main components (dry %) are: Ni22.63, Fe28.23, Mn0.025, Mg2.08, S29.14 , Ca<0.13, Co0.63, heat up to 85°C, feed industrial oxygen, control oxygen pressure 0.4MPa, after 40 minutes, add 750 grams of ammonium sulfate, 700 ml of industrial nitric acid (63%), heat up to 85°C, pass Enter industrial oxygen, control the reaction pressure 0.8MPa, cool, filter and wash after 2 hours, and produce 31 liters of leachate (including washing water), and its composition is (g / L): Ni48.73, Fe14.82, Mg0.72, Co0.834. The output leaching residue is 5.4 kg (dry basis), containing Ni0.313%. The filter residue obtained by nitric acid pressure leaching and filtration is sent to the flotation system to recover elemental sulfur. Add 5.5 kg of potassium sulfate to the leaching solution in a 50-liter stirring tank, heat it to 90-95°C under normal pressure, and control the pH ...

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Abstract

The present invention belongs to the field of wet treating process of nickel sulfide material, and is especially wet process of preparing nickel sulfamate with concentrated nickel sulfide ore. The process includes the following steps: pressure leaching the material with nitric acid; neutralizing and purifying with ammonium carbonate or ammonia water to eliminate Fe, Mn, Zn and other impurities; distilling ammonium nickel carbonate to eliminate ammonia; drying refined nickel carbonate; dissolving refined nickel carbonate in sulfonic acid; depurating nickel sulfamate with black nickel; and regulating nickel sulfamate solution. The present invention has simple technological process, low nickel loss, capacity of recovering Co and other valuable metals, low power consumption, low cost and other advantages.

Description

technical field [0001] The invention belongs to a wet process method for nickel sulfide materials, in particular to a new process for preparing nickel sulfamate by a wet process from nickel sulfide concentrate. Background technique [0002] Nickel sulfamate is a nickel electroplating main salt that has developed rapidly in the world in recent years. Because of its low internal stress and fast deposition speed, it has been widely used in industries such as automobiles, motorcycles, metallurgy, electronics, nickel mesh, and aluminum alloys. In recent years, with the rapid development of the global electronics industry, the quality requirements of electronic products are even more refined. More and more manufacturers have higher and higher quality requirements for electroplated metal layers. The coating solution with low internal stress, good ductility and good uniformity is being vigorously advocated and promoted by many manufacturers. [0003] Metal sulfamate includes nick...

Claims

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Application Information

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IPC IPC(8): C01B21/096C01G53/00C01B17/027
Inventor 王翔王炜王青
Owner YUNNAN TIN GROUP HLDG
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