Analytical determining method for chemical phase of vallerite in copper sulfide ore

A determination method and technology for chemical substances, which are applied in the direction of analysis by chemical reaction of materials and material analysis by observing the influence of chemical indicators, can solve the problems of long process, large error, low efficiency, etc. The effect of large error and improved accuracy

Active Publication Date: 2012-10-03
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to eliminate the deficiencies and shortcomings of the above-mentioned prior art, to provide a chemical phase analysis and determination method of melkite in copper sulfide ore, and to solve the problem of large error, long process and low efficiency in traditional separation and measurement. question

Method used

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  • Analytical determining method for chemical phase of vallerite in copper sulfide ore
  • Analytical determining method for chemical phase of vallerite in copper sulfide ore
  • Analytical determining method for chemical phase of vallerite in copper sulfide ore

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Experimental program
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Embodiment 1

[0021] Weigh two identical samples at the same time, and perform leaching simultaneously according to the following steps respectively.

[0022] Step 1. Weigh two 0.2000g ore samples and set aside.

[0023] Step 2. Put the first ore sample in a 250mL conical flask, then add 100mL of leachate 1 to the conical flask, soak in a boiling water bath for 30 minutes, filter through slow filter paper after cooling, use 2% The washing liquid washes the precipitate and the Erlenmeyer flask 5 times, combines the washing liquid and the filtrate, heats and concentrates to 10ml, acidifies with nitric acid, adds chloride ions until no precipitation occurs, and measures after constant volume. This is the copper oxide in the sample. and secondary copper sulfide content, denoted as Cu Ⅰ .

[0024] Step 3. Put the second ore sample in a 250 mL beaker, then add 100 mL of leaching solution 3 into the beaker, and continue stirring and leaching for 3 hours. It is not suitable to use oscillation. Af...

Embodiment 2

[0029] Step 1. Weigh two identical samples at the same time, and the weighing amount is 0.5000g.

[0030] Step 2. Put the first ore sample in a 250mL conical flask, then add 100mL of leachate 1 to the conical flask, soak in a boiling water bath for 50 minutes, filter through slow filter paper after cooling, and use 2% The washing liquid washes the precipitate and the Erlenmeyer flask 6 times, combines the washing liquid and the filtrate, heats and concentrates to 15ml, acidifies with nitric acid, adds chloride ions until no precipitation occurs, and measures after constant volume. This is the copper oxide in the sample. and secondary copper sulfide content, denoted as Cu Ⅰ .

[0031] Step 3. Put the second ore sample in a 250 mL beaker, then add 100 mL of leaching solution 4 into the beaker, and continue stirring and leaching for 3 hours. It is not suitable to use oscillation. After the extraction, use slow filter paper to filter. Use 1% Wash the precipitate and the beaker w...

Embodiment 3

[0036] Step 1. Weigh two 0.7000g ore samples and set aside.

[0037] Step 2. Put the first mineral sample in a 250mL conical flask, then add 100mL leach solution 2 into the conical flask, leaching in a boiling water bath for 60 minutes, and filter through slow filter paper after cooling, using 2% The washing liquid washes the precipitate and the Erlenmeyer flask 6 times, combines the washing liquid and the filtrate, heats and concentrates to 20ml, acidifies with nitric acid, adds chloride ions until no precipitation occurs, and measures after constant volume. This is the copper oxide in the sample. and secondary copper sulfide content, denoted as Cu Ⅰ .

[0038] Step 3. Put the second ore sample in a 250 mL beaker, then add 100 mL of leaching solution 3 into the beaker, and continue stirring and leaching for 3 hours. It is not suitable to use oscillation. After the extraction, use slow filter paper to filter. Use 1% Wash the precipitate and the beaker with hydrochloric acid ...

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Abstract

The invention relates to an analytical determining method for a chemical phase of a vallerite in a copper sulfide ore. The analytical determining method comprises the following steps: weighting two ore samples same in weight; placing a first ore sample into a conical flask, adding 1%-2% silver nitrate and 4-6mol / L ammonia solution into the reaction vessel, performing leaching treatment in boiling water bath, and then determining a content of a mixture of copper oxide and secondary copper sulfide and recording the content as Cu I; placing a second ore sample into a beaker, adding 8%-12% hydrochloric acid and 120-200g / L thiourea solution, continuously stirring and leaching, determining at constant volume after leaching, and marking the content of the mixture of copper oxide, secondary copper sulfide and vallerite in the sample as Cu II; and obtaining a result according to a formula: Cu vallerite equal to Cu II minus Cu I. According to the analytical determining method disclosed by the invention, two samples instead of one sample are adopted, so that the influence of silver in leached residues in subsequent leaching after the copper oxide and the secondary copper sulfide are leached by using ammonia and silver nitrate on vallerite leaching is eliminated, the accuracy of the result is increased, and the problems of bigger error, long flow and low efficiency in traditional separating determination are solved.

Description

technical field [0001] The invention relates to an analysis and determination method of specific compounds in ores, in particular to a chemical phase analysis and determination method of graphite sulfide in copper sulfide ores. Background technique [0002] The average content of copper in the earth's crust is 1×10 -2 %, generally the content is relatively high in basic rocks. Copper is a typical chalcophilic element, and its primary minerals are almost all sulfides. It can not only form various types of hydrothermal deposits and skarn-type deposits, but also form magma-differentiated copper deposits together with nickel and cobalt. Nickel-type or cobalt-copper deposits can also form copper-bearing polymetallic deposits with zinc and lead. About 220 kinds of copper minerals have been found in nature, but there are more than a dozen common copper minerals. The main copper minerals include 17 kinds of chalcopyrite, bornite, chalcocite, blue chalcocite, and copper blue. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78G01N21/82
Inventor 王同敏朱来东郑省政王红燕张彦翠路军兵方彦霞齐白羽
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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