Floating method of high calcium magnesite

A high-calcium magnesite and pulp technology, applied in flotation, solid separation and other directions, can solve problems such as waste of resources, and achieve the effect of low cost, low grade and good flotation effect.

Inactive Publication Date: 2018-03-09
陈淑芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in recent years, many magnesite mines in my country only mine high-quality magnesite ore, an

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The high-calcium magnesite is ball-milled until the part with a fineness of less than 0.074mm accounts for 80% of the total weight of all materials, and then water is added to make a raw ore slurry with a weight concentration of 20%; the main component of the high-calcium magnesite contains MgO40% by weight percentage, SiO 2 5%, CaO 1%; the balance is impurities;

[0014] Put the raw ore pulp into the flotation equipment, under the condition of stirring speed of 1600~1800rpm, first add the inhibitor sodium hexametaphosphate and stir for 5min, the amount of sodium hexametaphosphate added is 50g / t raw ore pulp; then add the collector ten Diamine and stirred for 5 minutes, the amount of dodecylamine added is 50g / t of raw ore pulp; then foaming agent terpineol oil was added and stirred for 3 minutes, the amount of terpineol oil added was 6g / t of raw ore pulp; then reverse floating was carried out for 5 minutes Select rough selection to sort out the SiO-containing 2 The t...

Embodiment 2

[0017] Method is with embodiment 1, and difference is:

[0018] The part that is ball-milled until the fineness is less than 0.074mm accounts for 70% of the total weight of all materials, and water is added to make raw ore pulp with a weight concentration of 30%; the main components of high-calcium magnesite contain MgO43% by weight percentage, SiO 2 3%, CaO 3%; the balance is impurities;

[0019] Add inhibitor sodium hexametaphosphate and stir for 4 minutes, the amount of sodium hexametaphosphate added is 60g / t raw ore pulp; add collector dodecylamine and stir for 4 minutes, the amount of dodecylamine added is 70g / t raw ore pulp; Foaming agent terpineol oil and stirring for 2 minutes, the amount of terpineol oil added is 7g / t raw ore pulp; carry out reverse flotation roughing for 4 minutes, and the raw concentrate is subjected to reverse flotation and concentration for 2 times;

[0020] The weight concentration of desiliconized pulp is 25%, add inhibitor water glass and sti...

Embodiment 3

[0022] Method is with embodiment 1, and difference is:

[0023] The part that is ball-milled until the fineness is less than 0.074mm accounts for 75% of the total weight of all materials, and water is added to make raw ore pulp with a weight concentration of 40%; the main components of high-calcium magnesite contain MgO45.5% by weight percentage, SiO 2 1%, CaO 5%; the balance is impurities;

[0024] Add inhibitor sodium hexametaphosphate and stir for 3 minutes, the amount of sodium hexametaphosphate added is 80g / t raw ore pulp; add collector dodecylamine and stir for 3 minutes, the amount of dodecylamine added is 90g / t raw ore pulp; The foaming agent is terpineol oil and stirred for 1 min, the amount of terpineol oil added is 8g / t raw ore pulp; reverse flotation roughing is carried out for 3 minutes, and the raw concentrate is subjected to reverse flotation and concentration for 2 times;

[0025] The weight concentration of desiliconized pulp is 30%, add inhibitor water glas...

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PUM

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Abstract

A flotation method of high calcium magnesite, which is carried out according to the following steps: grind the high calcium magnesite and add water to make raw ore pulp; put the raw ore pulp into flotation equipment, add inhibitors and stir; add collector Stirring; adding foaming agent to stir; then reverse flotation roughing, the original concentrate obtained by reverse flotation roughing is subjected to reverse flotation and concentration for 1~2 times; desiliconized pulp is made, and inhibitors are added to stir, and hexadecimal Sodium phosphate is stirred, and RA715 is added to stir, and the positive flotation roughing is carried out, and the obtained desiliconized concentrate is subjected to 1~2 positive flotation concentration, and the magnesite concentrate is obtained. The grade of the ore processed by the method of the invention is low, and the obtained magnesite concentrate can reach the special grade standard of the metallurgical industry, and the flotation effect is good and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, in particular to a flotation method for high-calcium magnesite. Background technique [0002] Magnesite is an important non-metallic mineral resource and an important raw material for magnesia materials. About 90% of magnesite is used to produce high-grade refractory materials with a refractoriness above 2000°C. [0003] Magnesite is one of the advantageous mineral resources in my country. The proven reserves of magnesite are about 3.564 billion tons, accounting for 28.7% of the world's total reserves, ranking first in the world. Most of my country's magnesite resources are low-iron crystalline magnesite, which has high grade and low mining cost. However, in recent years, many magnesite mines in my country only mine high-quality magnesite ore, and many relatively poor magnesite ores have not been utilized, resulting in a great waste of resources. With the depletion of high-quality ma...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/001B03D101/02B03D103/04
CPCB03D1/00B03D1/001B03D2201/02B03D2203/04
Inventor 陈淑芳
Owner 陈淑芳
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