Multi-stage segmental ore-dressing, purifying, and comprehensive utilization method for low-grade magnesite

A magnesite, low-grade technology, applied in recycling technology, chemical instruments and methods, wet separation, etc., can solve the problem that low-grade magnesite is not effectively utilized, high-grade magnesite resources are reduced, and it is difficult to meet Market demand and other issues, to achieve the effects of cheap raw materials, low production costs, and high output rates

Inactive Publication Date: 2013-11-27
LIAONING DONGHE NEW MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

my country's magnesite is famous for its large quantity and high quality. However, due to the long-term mining method of abandoning poor and high-quality mining, the resources of high-grade magnesite in my country are decreasing day by day, and a large amount of low-grade magnesite is abandoned and stockpiled without effective utilization. , resulting in a huge waste of resources
However, the resources of high-grade magnesite are decreasing day by day, and it is difficult to meet the demand of the market. It is urgent to find a suitable purification method for low-grade magnesite

Method used

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  • Multi-stage segmental ore-dressing, purifying, and comprehensive utilization method for low-grade magnesite
  • Multi-stage segmental ore-dressing, purifying, and comprehensive utilization method for low-grade magnesite
  • Multi-stage segmental ore-dressing, purifying, and comprehensive utilization method for low-grade magnesite

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Embodiment 1

[0030] After the magnesite tailings raw ore is crushed and screened, the ore below -60mm enters the production system, and through grinding and classification, -0.074μm reaches (70-80)%, enters the flotation system, adds flotation combination reagents, and passes through the first stage , secondary and tertiary flotation to obtain qualified magnesite concentrate.

[0031] Flotation reagents: cocamine, oxidized paraffin soap, terpineol oil, the addition amount is: cocamine reagent: 200-260g / t; oxidized paraffin soap reagent: 300-500 g / t; terpineol oil reagent: 50 -150g / t; Concentrate powder with MgO grade > 47% in mineral processing products is mixed with recovered magnesium oxide powder and rolled according to the specified time, the particle size is between 20-80mm, the raw materials are fully mixed, and the raw materials are preliminarily compacted , the compacted material is fed into the roller compactor through the belt conveyor for primary compaction, transported by the b...

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Abstract

The invention relates to a multi-stage segmental ore-dressing, purifying, and comprehensive utilization method for low-grade magnesite. The method comprises the following steps of: crushing low-grade magnesite, ore grinding, grading, sorting and purifying, light burning of products after ore dressing, high-purity magnesium oxide preparation by magnesium salts converted by useful components after light burning, fused magnesite production, forsterite preparation by tailings, waste heat recovery for ore-dressing heating, and fused magnesite preparation by cake pressing of recovery dust. Compared with the prior art, the method has the beneficial effects of realizing zero release of tailings of magnesite, efficiently utilizing ore resources, saving energy by virtue of the adopted multi-layer shaft furnaces and multi-layer roasting and maximizing the economic benefits; the method has the advantages of simple process, low production cost, high product purity, high yield and no environment pollution.

Description

technical field [0001] The invention relates to the field of ore dressing, in particular to a method for the multi-stage segmented ore dressing, purification and comprehensive utilization of low-grade magnesite. Background technique [0002] Magnesite is a very important non-metallic mineral, widely used in metallurgy, building materials and chemical industries. my country's magnesite is famous for its large quantity and high quality. However, due to the long-term mining method of abandoning the poor and mining for high quality, the resources of high-grade magnesite in my country are decreasing day by day, and a large amount of low-grade magnesite is abandoned and stockpiled without effective utilization , resulting in a huge waste of resources. However, the resources of high-grade magnesite are decreasing day by day, and it is difficult to meet the demand of the market. It is urgent to find a suitable purification method for low-grade magnesite. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B9/06B03B1/00
CPCY02W30/20Y02W30/52
Inventor 毕胜民
Owner LIAONING DONGHE NEW MATERIAL CO LTD
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