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Method for flotation of cryptocrystalline magnesite

A cryptocrystalline and magnesite technology, applied in flotation, chemical instruments and methods, magnetic separation, etc., can solve problems such as resource waste, ore dumping, environmental pollution, etc., to save energy, protect resources and the environment, and solve Effects of Environmental Pollution Problems

Pending Publication Date: 2021-05-04
辽宁省地质矿产研究院有限责任公司
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AI Technical Summary

Problems solved by technology

[0004] In fact, the grade of MgO in the so-called lean ore is also about 40%, and the recovery rate of some mines in my country is less than 50%, or even lower, resulting in a great waste of resources, a large number of ore dumps, and environmental pollution.

Method used

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Embodiment 1

[0022] Embodiment 1 A kind of method of flotation aphanitic magnesite

[0023] In the Suolun Mountain Mining Area of ​​Urad Middle Banner, Inner Mongolia Autonomous Region, the main composition of the ore is magnesite, accounting for about 70%, the crystallite size is less than 0.1mm, and the secondary mineral components are quartz (chalcedony), dolomite, each It accounts for about 10%, and a small amount of minerals include calcite, lepidorite (including goethite) and serpentine, etc., accounting for about 3%. Most of the magnesite is aphanitic and partially colloidal, and it is difficult to see crystalline magnesite under the microscope. Dolomite and calcite are generally microcrystalline or fine crystalline, and they are mainly vein-like embedded in the ore, with a pulse width of 0.1-2 mm. Quartz and chalcedony are microcrystalline, and more than 90% of the quartz and chalcedony in the ore are embedded along the fissures of the veinlets, with a pulse width of about 0.01-1m...

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Abstract

The invention relates to a method for flotation of cryptocrystalline magnesite. According to the technical scheme, magnesite lean ore is smashed and then ground, the obtained magnesite lean ore powder is sequentially subjected to primary ore grinding, low intensity magnetic separation, high intensity magnetic separation, third-time reverse flotation, secondary ore grinding and fifth-time direct flotation, and finally the upper-layer foam material which is received is dried. By adopting the method disclosed by the invention, the content of MgO in the low-grade cryptocrystalline magnesite can be effectively increased, the impurity content can be reduced, and the existing cryptocrystalline magnesite resources can be effectively developed and utilized, so that not only is the energy saved, but also the resource environment is protected, and better economic benefits and social benefits are created.

Description

technical field [0001] The invention belongs to the field of flotation methods, and in particular relates to a flotation method for processing lean aphanitic magnesite ore into high-quality magnesite. Background technique [0002] Magnesite is widely used in metallurgy, building materials, chemical industry, light industry, agriculture and animal husbandry, and magnesium extraction due to its high refractoriness, cohesiveness and other excellent physical and chemical properties. Magnesite is one of the advantageous mineral resources in my country. Its main type is crystalline magnesite. Its reserves, output and export volume all rank first in the world. The total reserves of magnesite in my country are about 3 billion tons, among which, the first and second grade products with MgO content above 43% account for 53% of the total reserves, and the reserves of first grade or above (including special grade) magnesite reach 1.17 billion tons , accounting for 37.6% of the total res...

Claims

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Application Information

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IPC IPC(8): B03D1/02B03B1/00B03C1/02B03D103/04
CPCB03B1/00B03C1/02B03D1/02B03D2203/04
Inventor 李志锋周南高野胡志刚徐亮杨新泉单晓莹程秀峰邵坤张佳琪
Owner 辽宁省地质矿产研究院有限责任公司
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