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Method for increasing magnesite flotation recovery rate

A flotation recovery rate and magnesite technology, applied in flotation, solid separation and other directions, can solve the problems of difficulty in high efficiency and stability, low concentrate rate, etc., and achieve the effects of ensuring product quality, improving MgO recovery rate, and efficient removal.

Inactive Publication Date: 2018-07-06
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the technical problems that the conventional reverse-positive flotation open-circuit process in the prior art has low concentrate yield and is difficult to achieve high efficiency and stability in industrial operation, the present invention provides a method for improving the recovery rate of magnesite flotation, It can not only efficiently remove silicon-calcium impurities, greatly improve the recovery rate of magnesite flotation, but also have stable production, and can realize the application of low-grade magnesite flotation desiliconization and calcium reduction process in industry

Method used

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  • Method for increasing magnesite flotation recovery rate
  • Method for increasing magnesite flotation recovery rate
  • Method for increasing magnesite flotation recovery rate

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Embodiment 1

[0030] Such as figure 2 Shown, a kind of method that improves magnesite flotation recovery, may comprise the steps:

[0031] Step a. Grinding the raw magnesite ore until it is basically dissociated, so as to obtain the raw ore slurry whose grinding fineness is less than 0.074 mm and the mass accounts for 60-90 wt%.

[0032]Step b, adding reverse flotation reagents to the raw ore pulp, and performing reverse flotation desiliconization operations; the reverse flotation desiliconization operations include first performing a reverse flotation roughing, and the foam in the reverse flotation roughing directly forms a reverse flotation Flotation tailings 1, and then carry out two reverse flotation concentration (ie reverse flotation concentration Ⅰ and reverse flotation concentration Ⅱ) on the underflow of reverse flotation roughing, and then all or part of the reverse flotation concentration The foams are combined together for a reverse flotation fine sweep, and the underflow of t...

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Abstract

The invention discloses a method for increasing the magnesite flotation recovery rate. The method comprises the steps that reverse flotation silicone-removing work is conducted on crude ore pulp, foamsubjected to reverse flotation fine selection is fused together for reverse flotation fine scavenging, underflow subjected to reverse flotation fine scavenging returns to the first reverse flotationfine selection or reverse flotation coarse selection, underflow subjected to last reverse flotation fine selection is subjected to direct flotation calcium-lowering work, underflow subjected to directflotation coarse selection is subjected to direct flotation scavenging, foam subjected to direct flotation coarse selection is subjected to two to four times of direct flotation fine selection, foamsubjected to the last direct flotation fine selection is magnesite concentrate, underflow subjected to the first direct flotation fine selection is subjected to direct flotation fine scavenging, foamof direct flotation fine scavenging returns to direct flotation coarse selection or direct flotation scavenging, and other underflow subjected to direct flotation fine selection and foam subjected todirect flotation scavenging return to the previous work in sequence. Silicone and calcium impurities can be efficiently removed, the magnesite flotation recovery rate is increased by a large margin, and application of a flotation silicone-removing calcium-lowering technology of low-grade magnesite in the industry can also be achieved.

Description

technical field [0001] The invention relates to the field of magnesite beneficiation, in particular to a method for improving the flotation recovery rate of magnesite. Background technique [0002] Magnesite is an important strategic mineral resource and an essential refractory material in metallurgy, chemical industry, and non-metallic industries. It can be used to prepare high-end functional materials required in aerospace, aviation, military, metallurgy, and environmental protection. Due to the relatively rich and concentrated reserves of magnesite resources, high ore grade and less impurities, there has been a serious phenomenon of "mining the rich and abandoning the poor" in the development of magnesite for many years, and has long relied on high-quality minerals that can be directly used without enrichment. Grade ore (MgO content>46%). However, with the depletion of high-grade magnesite resources, and the downstream industrial chain has higher and higher requiremen...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D103/04
CPCB03D1/00B03D2203/04
Inventor 朱阳戈郑桂兵胡晓星谭欣孙昊李松清崔强张行荣宋振国肖婉琴任爱军
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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