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
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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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