Method for removing impurities from attapulgite clay ores
A kind of technology of attapulgite clay and ore
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Embodiment 1
[0026] In this embodiment, the attapulgite clay ore is subjected to impurity removal treatment through the combined process of weathering-sieving, and the specific method is as follows:
[0027] 1. Air-dry the attapulgite clay ore until the water content is less than 18%, then soak in water to make the attapulgite clay ore absorb water to saturation and keep it for 5 hours, repeat the air-drying and soaking process once, drain and air-dry until the water content is less than 30% % get material a;
[0028] 2. Sieve the material a with a drum sieve with double-layer screens, collect the pellets between the double-layer screens to obtain enriched attapulgite mineral powder, and collect the pellets passing through the double-layer screens to obtain enriched montmorillonite ore powder, the rest is impurity material rich in opal, dolomite and basalt particles;
[0029] The aperture of the outer screen of the double-layer screen used in this embodiment is 1 mm, and the aperture of t...
Embodiment 2
[0031] In this embodiment, the attapulgite clay ore is subjected to impurity removal treatment through the combined process of freeze-thaw-sieving, and the specific method is as follows:
[0032] 1. Add water to the attapulgite clay ore to absorb water to saturation and keep the attapulgite clay ore for 5-8 hours to obtain material a, cool and freeze the material a for 24 hours, then heat and melt, repeat the freezing and melting process once, and obtain material b;
[0033] 2. Sieve the material b with a drum sieve with double-layer screens, collect the pellets between the double-layer screens to obtain attapulgite-enriched mineral powder, and collect the pellets passing through the double-layer screens to obtain enriched montmorillonite ore powder, the rest is impurity material rich in opal, dolomite and basalt particles;
[0034] The aperture of the outer screen of the double-layer screen used in this embodiment is 2 mm, and the aperture of the inner screen of the double-l...
Embodiment 3
[0036] In this embodiment, the attapulgite clay ore is subjected to impurity removal treatment through the combined process of weathering-sieving, and the specific method is as follows:
[0037] 1. Air-dry the attapulgite clay ore until the water content is less than 18%, then soak in water to make the attapulgite clay ore absorb water to saturation and keep it for 8 hours, repeat the air-drying and soaking process once, drain and air-dry until the water content is less than 30% % get material a;
[0038] 2. Sieve the material a with a drum sieve with double-layer screens, collect the pellets between the double-layer screens to obtain enriched attapulgite mineral powder, and collect the pellets passing through the double-layer screens to obtain enriched montmorillonite ore powder, the rest is impurity material rich in opal, dolomite and basalt particles;
[0039] The aperture of the outer screen of the double-layer screen used in this embodiment is 1.5 mm, and the aperture of...
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