Flotation impurity-removing method for asbestos-containing talcose ore

A technology for talc ore and asbestos, applied in flotation, solid separation, etc., can solve the problem of asbestos being difficult to remove, and achieve the effects of low cost, good foaming, and good mineral selectivity

Inactive Publication Date: 2013-01-23
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that asbestos in existing asbestos-containing talc mines is difficult to remove, the present invention provides a flotation impurity removal method for asbestos-containing talc mines. By adjusting the chemicals added in flotation and controlling the flotation parameters, asbestos removal can be achieved. fiber effect

Method used

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  • Flotation impurity-removing method for asbestos-containing talcose ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The composition of the selected asbestos-containing talc ore is SiO by weight percentage 2 55.07%, MgO31.21%, CaO4.82%; Fe 2 o 3 0.10%;Al 2 o 3 0.32%; the balance is impurities; the weight content of talc is 78.5%, the weight content of tremolite is 9%, the whiteness is 92%, and it contains asbestos fibers through polarizing microscope detection;

[0032] Use XMCQФ180×200 porcelain ball mill to grind asbestos-containing talc ore until the fineness is less than 0.074mm, accounting for 90% of the total weight of all materials, and then add water to make raw ore pulp with a weight concentration of 20%;

[0033] Put the raw ore in the flotation equipment, add NaOH to adjust the pH value to 10.8 under stirring conditions, then add the inhibitor phytic acid and stir for 4 minutes, the amount of phytic acid added is 200g / t raw ore pulp, and then add collector ten Sodium dialkylbenzenesulfonate and stirring for 4min, the addition of sodium dodecylbenzenesulfonate is 250g...

Embodiment 2

[0045] The composition of the selected asbestos-containing talc ore is SiO by weight percentage 2 54.5%, MgO 30%, CaO 4.5%; Fe 2 o 3 0.15%;Al 2 o 3 0.35%; the balance is impurities; the weight content of talc is 77.2%, the weight content of tremolite is 8%, the whiteness is 93%, and it contains asbestos fibers through polarizing microscope detection;

[0046] Use XMCQФ180×200 porcelain ball mill to grind asbestos-containing talc ore until the fineness is less than 0.074mm, accounting for 80% of the total weight of all materials, and then add water to make the weight concentration 15% raw ore pulp;

[0047] The raw ore will be placed in the flotation equipment, under the condition of stirring, firstly add NaOH to adjust the pH value to 11.1, then add the inhibitor phytic acid and stir for 3 minutes, the amount of phytic acid added is 150g / t raw ore pulp, then add collector Sodium dialkylbenzenesulfonate and stirring for 3min, the addition of sodium dodecylbenzenesulfona...

Embodiment 3

[0059] The composition of the selected asbestos-containing talc ore is SiO by weight percentage 2 55.5%, MgO 30.6%, CaO5%; Fe 2 o 3 0.13%;Al 2 o 3 0.33%; the balance is impurities; the weight content of talc is 78.2%, the weight content of tremolite is 7%, the whiteness is 94%, and it contains asbestos fibers through polarizing microscope detection;

[0060] Use XMCQФ180×200 porcelain ball mill to grind asbestos-containing talc ore until the fineness is less than 0.074mm, accounting for 75% of the total weight of all materials, and then add water to make the weight concentration 25% Crude pulp;

[0061] The raw ore will be placed in the flotation equipment, and NaCO will be added under stirring conditions 3 Adjust the pH value to 10, then add the inhibitor phytic acid and stir for 4 minutes. The amount of sodium acid sodium added is 230g / t raw ore pulp; then carry out 4min forward flotation roughing to obtain roughing concentrate and roughing tailings; stirring speed...

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Abstract

The invention relates to a flotation impurity-removing method for an asbestos-containing talcose ore and belongs to the technical field of ore processing. The flotation impurity-removing method comprises the following steps: milling the asbestos-containing talcose ore and adding water into the milled asbestos-containing talcose ore, thereby preparing raw ore slurry; placing the raw ore slurry in a flotation device, adjusting pH value under the condition of stirring, adding in an inhibitor and stirring, adding in a collecting agent and stirring, and then coarsely separating, thereby acquiring a coarsely separated concentrate; adjusting the pH value of the coarsely separated concentrate under the stirring condition, adding in the inhibitor and stirring, adding in the collecting agent and stirring, and then once finely separating, thereby acquiring a primary concentrate; adjusting the pH value of the primary concentrate under the stirring condition, adding in the inhibitor and stirring, and then performing secondary direct flotation, thereby acquiring a secondary concentrate; and stirring after adjusting the pH value of the secondary concentrate under the stirring condition, and thenperforming the third direct flotation. By using the method provided by the invention, the flotation effect is excellent and the industrial production of the asbestos-containing talcose ore can be easily realized.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, in particular to a method for removing impurities by flotation of asbestos-containing talc ore. Background technique [0002] Talc ore is one of the advantageous mineral resources in my country. The proven reserves of talc ore are about 247 million tons, accounting for 30% of the world's total reserves. Talc ore deposits are distributed in 15 provinces (municipalities) and autonomous regions. Concentrated in five provinces of Liaoning, Shandong, Guangxi, Jiangxi, and Qinghai, accounting for 95% of the national resources; among them, Liaoning, Shandong, and Guangxi have the best quality talc resources and the earliest development; Jiangxi is mainly black talc, and Qinghai Mangya is associated with asbestos mine. [0003] Talc ore is a kind of important non-metallic mineral resources, among which the consumption of talc in the four major markets of ceramics, papermaking, paint and plastic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03D1/014B03D101/02B03D101/06
Inventor 印万忠田鹏杰纪振明李丰朱德山
Owner NORTHEASTERN UNIV LIAONING
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