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Process for preparing red copper powder from crude copper ore

A technology for red copper powder and copper ore, applied in the field of directly producing red copper powder from copper ore, can solve the problem of high production cost, achieve the effects of low production cost, improve recovery rate and avoid environmental pollution

Inactive Publication Date: 2004-10-13
周作才
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiency of high production cost of the existing production method, the present invention provides a method for producing red copper powder from copper ore, which has the characteristics of low production cost and can improve the utilization and recovery rate of resources

Method used

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  • Process for preparing red copper powder from crude copper ore
  • Process for preparing red copper powder from crude copper ore
  • Process for preparing red copper powder from crude copper ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] like figure 1 As shown, copper ore is directly used as raw material, and red copper powder is produced through the following process:

[0013] (1) crushing: the copper oxide bonded ore is crushed, and the particle size is 3 cm;

[0014] (2) Ball milling: Wet mill the crushed ore to form ore pulp with a graded particle size of 200 mesh, which is conducive to full decomposition during the decomposition process;

[0015] (3) Decomposition reaction: inject the ore slurry into the paddle-type reactor, and add liquid ammonia and water to make the pH value of the solution reach 13, then add sodium carbonate and sodium hydroxide as catalysts, water and sodium carbonate, sodium hydroxide The weight ratio of the reactor is 100:2:2, heating and pressurizing makes the temperature in the reactor reach 80° C., the pressure reaches 5 MPa, and the reactor runs for 3 hours. The main chemical reaction equation in the decomposition process is as follows:

[0016] Decomposition of basic...

Embodiment 2

[0029] Directly use copper ore as raw material, and produce red copper powder through the following process: (1) crushing: crushing the copper oxide bonded ore; (2) ball milling: wet grinding the crushed ore to form a slurry; (3) Decomposition reaction: inject the ore slurry into the paddle-type reactor, and add liquid ammonia and water to make the pH value of the solution reach 12, then add sodium carbonate and sodium hydroxide as catalysts, the weight ratio of water to sodium carbonate and sodium hydroxide 100:1:1, heated and pressurized so that the temperature in the reactor reached 70°C, the pressure reached 3Mpa, and the reactor was run for 2 hours; (4) solid-liquid separation: use a filter press to separate the copper ammine ion solution from the tail Mine separation; (5) Solution separation: heat and pressurize the copper ammonium ion solution to separate copper oxide powder at a temperature of 150°C and a pressure of 6Mpa, and return the ammonia, carbonic acid and sodiu...

Embodiment 3

[0031] Directly use copper ore as raw material, and produce red copper powder through the following process: (1) crushing: crushing the copper oxide bonded ore; (2) ball milling: wet grinding the crushed ore to form a slurry; (3) Decomposition reaction: inject the ore slurry into the paddle-type reactor, and add liquid ammonia and water to make the pH value of the solution reach 12, then add sodium carbonate and sodium hydroxide as catalysts, the weight ratio of water to sodium carbonate and sodium hydroxide 100: 3: 3, heated and pressurized so that the temperature in the reactor reached 70°C, the pressure reached 6Mpa, and the reactor was operated for 3 hours; (4) solid-liquid separation: use a filter press to separate the copper ammonium complex ion solution from the tail Mine separation; (5) solution separation: heat and pressurize the copper ammonium ion solution, the temperature is 170°C, the pressure is 8Mpa, and the copper oxide powder is separated, and the ammonia, carb...

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Abstract

A process for preparing red copper powder from raw copper ore includes such steps as crushing; wet ball grinding to make or slurry; decomposing reaction of ore slurry; liquid aommonia and water at 70-80 deg.C and under 3-6 MPa for 2-3 hr under existance of sodium carbonate and sodium hydroxide; separating the copper-ammonia complex ion solution from tailings, separating copper oxide powder from the said solution at 150-170 deg.C and under 6-8 MPa; and producing red copper powder by adding glucose solution as reducer. Its advantages are low cost and high utilization rate.

Description

technical field [0001] The invention relates to a method for producing red copper powder, in particular to a method for directly producing red copper powder with copper ore. Background technique [0002] Red copper powder (Cu 2 (2) is the main raw material for anti-corrosion coatings for berths. At present, the known method of producing red copper powder is to use electrolytic copper as a raw material. After heating and dissolving with acid, a copper sulfate solution is formed, and then glucose is used as a reducing agent to reduce red copper. Powder (Cu 2 O). Since electrolytic copper is used as the main raw material, there is a disadvantage of high production cost. Contents of the invention [0003] In order to overcome the disadvantage of high production cost in the existing production method, the present invention provides a method for producing red copper powder from copper ore, which has the characteristics of low production cost and can improve resource utilizati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/14
CPCY02P10/20
Inventor 周作才
Owner 周作才
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