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Separation process of coarse quartz grain and feldspar

A separation method, quartz technology, applied to the separation of coarse-grained quartz and feldspar, single mineral quartz or feldspar field, can solve the problem of high risk, and achieve the effect of simple method, safe operation and low separation cost

Inactive Publication Date: 2003-06-04
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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Problems solved by technology

The disadvantages are: the operation is dangerous, fire prevention and high temperature prevention are required, hydrogen and oxygen must not be mixed, and the laboratory must be convectively ventilated; The air inlet pipe in the stirring shaft is sent into the bottled helium, and the rest of the operations are the same as the "conventional method"

Method used

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Experimental program
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Embodiment Construction

[0008] The specific steps are as follows:

[0009] A. Put the sample into the crusher for crushing, and the particle size reaches 40-80 mesh;

[0010] B. Sorting the crushed samples with a shaker to remove heavy minerals and leave light minerals;

[0011] C. Use a magnetic separator to remove magnetic minerals from light minerals, remove electromagnetic minerals with an electromagnetic separator, and leave non-magnetic minerals quartz and feldspar;

[0012] D. Put the quartz and feldspar into an acid-resistant container, add 50-80% hydrochloric acid until the sample is submerged, soak for 1-3 hours, then pour out the acid solution, leaving the quartz and feldspar;

[0013] E. Pour the sample soaked in hydrochloric acid into the XFD-63 flotation machine, adjust the speed of the flotation machine to 2000 rpm, stir for 5-10 minutes, and control the temperature of the pulp at 30-40 °C;

[0014] F. In the flotation machine, add hydrochloric acid, pH: 2-3; after the pH value is ad...

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PUM

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Abstract

The separation process of coarse quartz and feldspar includes the steps of: crushing in a crusher; separating in shaking table to obtain light ore while eliminating heavy ore; magnetic separation of the light ore in magnetic separator to eliminate magnetic ore and electromagnetic separation to eliminate electromagnetic ore while obtaining quartz and feldspar; soaking quartz and feldspar in hydrochloric acid inside a container; stirring the soaked material in flotation machine at ore slurry temperature of 30-40 deg.c; and final air flotation after adding hydrochloric acid, citric acid and lauric acid and through stirring. The said process can separate quartz and feldspar effectively to reach quartz purity product of 95-98% and feldspar product purity of 92-95%.

Description

technical field [0001] The invention belongs to the processing and utilization of non-metallic minerals, and more specifically relates to a method for separating coarse-grained quartz and feldspar, especially to provide single mineral quartz or feldspar for various analysis and testing methods in geoscience research. Background technique [0002] The separation of quartz and feldspar mainly adopts flotation method in ore dressing. Since this method came out in 1939, it has been unanimously recognized by peer experts, and it is very popular in the United States, Japan, Italy, Finland, Germany and other countries. More than 85% of the feldspar production in the United States is obtained by flotation. There are two main methods for flotation separation of quartz and feldspar: flotation with fluorine and flotation without fluorine. Fluorine-free flotation has been successfully studied in Japan and the United States and has been applied in industry, but...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C19/00B03B4/02B03B7/00B03C1/02B03D1/00B03D1/02
Inventor 李卫
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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