Process method for separating quartz sand, arkosic sand and iron powder from river yellow sand

A process method, quartz sand technology, applied in chemical instruments and methods, solid separation, wet separation, etc., can solve the problem of no further recycling, limited use of the product quartz sand, failure to maximize the use value and best economic benefits of yellow sand and other issues to achieve the effect of high purity

Active Publication Date: 2013-10-30
田辉明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method cannot fundamentally solve the problem of the purity of the purified quartz sand—the separation of mica and feldspar, and the use of the product quartz sand is greatly restricted; and the feldspar sand and iron or

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Take the yellow sand from the Shangba River in Huanggang City, where the SiO2 content is 70%, and the separation process is as follows:

[0052] (1) Desliming, grading, removing mica flakes

[0053] Use a sand suction pump to absorb the mortar from the river, send it to the desliming bucket and wash it with clean water for desliming. The deslimed mortar is graded with a cylindrical sieve made of stainless steel, and the sand particles of 20-120 meshes are screened out. The mortar is sent to the washing tank Countercurrent washing with clean water to remove unwashed mud and mica flakes; materials under 120 mesh sieve can be used as siliceous raw materials for cement and lime-sand bricks for building materials;

[0054] (2) Magnetic separation and gravity separation to remove iron

[0055] Use a magnetic separator with a magnetic field strength of 15,000 Gauss to remove magnetic metal substances from the granular mortar cleaned in the previous step, and use a jig + spira...

Embodiment 2

[0069] Take the river yellow sand of Shangba River in Huanggang City, in which SiO 2 The content is 75%, and the separation process is as follows:

[0070] (1) Desliming, grading, removing mica flakes

[0071] Use a sand suction pump to absorb the mortar from the river, send it to the desliming bucket and wash it with clean water for desliming. The deslimed mortar is graded with a cylindrical sieve made of stainless steel, and the sand particles of 20-100 meshes are screened out. The mortar is sent to the washing tank Countercurrent washing with water to remove unwashed mud and mica flakes;

[0072] (2) Magnetic separation and gravity separation to remove iron

[0073] Use a magnetic separator with a magnetic field strength of 10,000 gauss to remove magnetic metal substances from the granular mortar cleaned in the previous step, and use a combination of 3 series-connected spiral chutes to separate weakly magnetic and non-magnetic metal substances and unremoved For mica flak...

Embodiment 3

[0087] Take Changhe river sand in Taihu County, Anhui Province, in which SiO 2 The content is 73%; the separation process is as follows:

[0088] (1) Desliming, grading, removing mica flakes

[0089] Use a sand suction pump to absorb the mortar from the river, send it to the desliming bucket and wash it with clean water for desliming. The deslimed mortar is classified with a cylindrical sieve made of PVC material, and the sand particles of 20 to 100 meshes are screened out. The mortar is sent to the water washing tank Countercurrent washing with water to remove unwashed mud and mica flakes;

[0090] (2) Magnetic separation and gravity separation to remove iron

[0091] Use a magnetic separator with a magnetic field strength of 15,000 gauss to remove the magnetic metal substances from the granular mortar cleaned in the previous step, and use a combination of three series of spiral chutes to separate the weakly magnetic and non-magnetic metal substances and unremoved For mica...

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Abstract

The invention provides a process method for separating quartz sand, arkosic sand and iron powder from river yellow sand. The method mainly comprises the following process steps of (1), performing desliming, grading and sheet mica removing; (2), removing iron through magnetic separation and gravity separation; (3), removing an oxidized skin through alkaline wash; (4) performing acid neutralization and removing the iron; (5) separating the quartz sand from the arkosic sand through flotation separation; (6) removing the iron through water wash, the magnetic separation and the gravity separation; (7) removing variegated pellets through photoelectric separation; (8) recycling fine iron powder made of iron. The quartz sand produced by the process method is high in purity, wherein the content of SiO2 is 98.0-99.0%, and the content of Fe2O3 is 0.009-0.015%. The produced arkosic sand can serve as materials of ordinary glass and ordinary ceramics. Metallics obtained through the magnetic separation and the gravity separation can produce the fine iron powder with the grade larger than or equal to 66%. By means of the process method, yellow sand resources are fully utilized without any waste, and the whole production process does not discharge waste alkali and waste acid. Therefore, the process method is friendly to the environment.

Description

technical field [0001] The invention relates to the field of non-metallic mineral processing, in particular to a process for separating quartz sand, feldspar sand and iron powder from river yellow sand. Background technique [0002] Yellow sand and other sand and stone in the river course are one of the important siliceous raw material resources of the country, and play a very important role in the construction of the national economy. In the middle and lower reaches of the Yangtze River in my country, there is abundant rainfall and numerous river channels, and the sandstone resources such as yellow sand in the river channels are relatively rich. Especially, the quality of yellow sand in the river channels under Tongbai Mountain, Dabie Mountain, and Mufu Mountain is the best. The carbon dioxide in the yellow sand The silicon content is 70% to 80%, and other impurities are: a small amount of soil, feldspar, magnetite, ilmenite, limonite, mica flakes, etc. It is a natural high-...

Claims

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Application Information

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IPC IPC(8): B03B7/00
Inventor 田辉明
Owner 田辉明
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