Step-by-step flotation method for high-silicon high-calcium low-grade brucite

A step-by-step flotation, low-grade technology, used in flotation, solid separation, etc., to achieve the effect of improving the flotation environment, stable operation and high content

Inactive Publication Date: 2012-07-04
NORTHEASTERN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the current problems, the present invention provides a step-by-step flotation method for hig

Method used

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  • Step-by-step flotation method for high-silicon high-calcium low-grade brucite

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The main components of high silicon, high calcium and low grade brucite raw materials contain MgO53.08%, SiO 2 12.29%, CaO 4.75%, Al 2 o 3 0.07%, the balance is impurities;

[0027] Ball mill high-silicon, high-calcium and low-grade brucite to a fineness of ≤0.074mm, accounting for 70% of the total weight of all materials, and then add water to make raw ore pulp with a weight concentration of 20%;

[0028] Put the raw ore slurry into the flotation equipment, under the condition of stirring speed 1600rpm, first add inhibitor water glass and stir for 3min, the amount of water glass added is 800g / t, then add collector dodecylamine and stir for 3min, dodecylamine The addition amount is 100g / t raw ore pulp, then add foaming agent terpineol oil and stir for 60s, the addition amount of terpineol oil is 10g / t raw ore pulp, and then carry out 4min reverse flotation roughing to sort out calcium-containing tailings , to obtain rough concentrate;

[0029] The coarse concentra...

Embodiment 2

[0036]The main components of high-silicon, high-calcium and low-grade brucite raw materials contain MgO58.08%, SiO 2 5.29%, CaO4.75%, Al 2 o 3 0.07%, the balance is impurities;

[0037] Ball mill high-silicon, high-calcium and low-grade brucite to a fineness of ≤0.074mm, accounting for 80% of the total weight of all materials, and then add water to make raw ore pulp with a weight concentration of 30%;

[0038] Put the raw ore slurry into the flotation equipment, under the condition of stirring speed 1700rpm, first add inhibitor water glass and stir for 4min, the addition of water glass is 900g / t raw ore pulp, then add collector dodecylamine and stir for 4min, ten The amount of diamine added is 150g / t raw ore pulp, then terpineol oil is added and stirred for 80s, the amount of terpineol oil added is 15g / t raw ore pulp, and then 5min reverse flotation roughing is carried out to separate the calcium-containing tailings , to obtain rough concentrate;

[0039] The coarse concen...

Embodiment 3

[0046] The main components of high silicon, high calcium and low grade brucite raw materials contain MgO59.08%, SiO 2 3.29%, CaO3.75%, Al 2 o 3 0.07%, the balance is impurities;

[0047] Ball mill high-silicon, high-calcium and low-grade brucite to a fineness of ≤0.074mm, accounting for 95% of the total weight of all materials, and then add water to make raw ore pulp with a weight concentration of 40%;

[0048] Put the raw ore pulp into the flotation equipment, under the condition of stirring speed 1800rpm, first add inhibitor water glass and stir for 3min, the water glass addition is 1500g / t raw ore pulp, then add collector dodecylamine and stir for 3min, twelve The amount of amine added is 200g / t of raw ore pulp, then terpineol oil is added and stirred for 90s, the amount of terpineol oil added is 20g / t of raw ore pulp, and then reverse flotation roughing is carried out for 4min to separate the tailings containing calcium. obtain crude concentrate;

[0049] The coarse co...

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Abstract

The invention belongs to the technical field of mineral processing, and particularly relates to a step-by-step flotation method for high-silicon high-calcium low-grade brucite, which includes the steps: adding water into the ball-milled high-silicon high-calcium low-grade brucite to prepare raw ore pulp, feeding the raw ore pulp into flotation equipment, adding inhibitors, collecting agents and foaming agents into the raw ore pulp in a stirring manner to perform reverse rougher flotation, and performing reverse cleaner flotation for obtained raw finished ores for 0-2 times to obtain desiliconized ores; and adding water into the desiliconized ores to prepare ore pulp, adjusting the pH (potential of hydrogen) value of the ore pulp, adding inhibitors into the ore pulp in a stirring manner, stirring collecting agents to perform direct rougher flotation, and performing direct cleaner flotation for obtained decalcified finished ores for 0-2 times to obtain finished brucite ores. The ores treated by the step-by-step flotation method are low in grade, the obtained finished brucite ores are high in purity, and the step-by-step flotation method is fine in flotation effect and low in cost.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a step-by-step flotation method for high-silicon, high-calcium and low-grade brucite. Background technique [0002] Brucite is an important non-metallic mineral resource, an important raw material for magnesia materials, and a high-quality raw material for the production of high-grade inorganic flame retardants and high-grade refractory materials. [0003] Brucite is one of the advantageous mineral resources in my country. The proven reserves of brucite have exceeded 30 million tons. At present, only China, the United States, Canada, Norway, Russia and North Korea have this deposit in the world. For a long time, most of the brucite resources in our country are of high natural grade. Many brucite mines only exploit high-quality brucite ore, and many low-grade brucite have not been utilized, resulting in a great waste of resources. With the depletion of high...

Claims

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Application Information

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IPC IPC(8): B03D1/00
Inventor 印万忠姚金罗溪梅姚丰起马英强李强侯英
Owner NORTHEASTERN UNIV
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