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Method for preparing wear-resistant material from tungsten tailings

A technology of wear-resistant materials and tungsten tailings, applied in the direction of coating, etc., can solve the problems of limited number of applications, low-end products, complex processes, etc., and achieve the effects of simple process, improved wear resistance, and wide sources

Inactive Publication Date: 2014-07-30
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] According to reports, domestic tungsten tailings are currently used in the production of cement mixtures, glass-ceramics, ceramics, unburned bricks, etc., but there are disadvantages such as low-end products, complicated processes, and low added value, and the number of applications is very limited. Research reports on the production of wear-resistant materials from tungsten tailings

Method used

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  • Method for preparing wear-resistant material from tungsten tailings
  • Method for preparing wear-resistant material from tungsten tailings

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Embodiment 1

[0019] A method for preparing wear-resistant materials from tungsten tailings, the operation steps comprising: drying the tungsten tailings to a moisture content of less than 5%, sieving with a 200-mesh standard sieve, performing combined gravity-magnetic separation on the products under the sieve, and selecting The final product is jet milled, and the ultrafine tungsten tailings powder is classified, and the wear-resistant material is obtained by taking the product with a mesh size of 600 or more. The yield and garnet content of each intermediate product and wear-resistant material are shown in Table 1.

[0020] Table 1 Intermediate product and wear-resistant material yield and garnet content

[0021] product

Embodiment 2

[0023] An ultra-fine processing method for preparing wear-resistant materials from tungsten tailings. The operation steps include: drying the tungsten tailings to a moisture content below 5%, and after screening, use a jet mill to achieve ultra-fine processing of the tungsten tailings through high-speed airflow. Fine processing, the pulverized tungsten tailings powder is classified by air to obtain tungsten tailings fine powder that meets the particle size requirements.

[0024] Table 2 Jet Milling Process Parameters

[0025]

Embodiment 3

[0027] An ultra-fine processing method for preparing wear-resistant materials from tungsten tailings. The operation steps include: drying the tungsten tailings to a moisture content below 5%, sieving, classifying by ball mills, and realizing ultra-fine grinding of the tungsten tailings by means of closed-circuit grinding. Fine processing to obtain tungsten tailings fine powder that meets the particle size requirements.

[0028] Table 3 Ball mill classification process parameters

[0029]

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Abstract

The invention provides a method for preparing a wear-resistant material from tungsten tailings, belonging to the field of solid waste comprehensive utilization. The preparation method comprises the steps of pre-screening tungsten tailings, carrying out physical sorting, ultra-finely processing to obtain ultrafine tungsten tailings powder, grading and preparing the wear-resistant material from the ultrafine tungsten tailings powder with a specific grade level. The content of garnet in the wear-resistant material is higher than 85% and the utilization rate of tailings is 60-85%. The purposes of purification of garnet and particle size control are achieved by making full use of hardness differences and grain size distribution characteristics of different mineral components in tungsten tailings and selectively grinding and grading. The wear-resistant material disclosed by the invention has the advantages that the particle size is uniform, the purity is high, the requirements of wear-resistant fillers in the coating industry can be met, coating cost is reduced and the wear resistance of the coating is improved. The preparation method has the advantages that sources of raw materials are wide, the preparation method is simple and feasible, the added value of tungsten tailings is greatly improved, and the waste is turned into wealth; the method has good economic and environmental benefits.

Description

technical field [0001] The invention relates to a method for preparing wear-resistant materials from tungsten tailings and an application thereof, belonging to the field of comprehensive utilization of solid waste. Background technique [0002] Tungsten tailings are gangue minerals left after tungsten concentrates are selected from raw tungsten ores. The main mineral components include garnet, quartz and mica. For a long time, tungsten tailings have been piled up on the surface or backfilled into mines as a kind of solid waste. At present, there is no real and efficient way to utilize tungsten tailings on a large scale. These tailings occupy a large amount of land, and may also cause soil and water pollution. A large amount of money needs to be invested in disposal every year, which is not conducive to economic construction and environmental protection, and hinders the sustainable development of mining enterprises. [0003] There are many kinds of wear-resistant materials, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D133/00
Inventor 杨华明彭康欧阳静
Owner CENT SOUTH UNIV
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