Desliming operation is an important part of the process of re-election, it directly affects indicators, more than 80% in the our country existing concentrators are sand tin ore dressing
plants. YunXi sand tin ore dressing plants, for example, undressed ore in 40 ~ 60% to 10 micron grade of fine slime, this to any separation method is a kind of interference. The desliming
operation actually divided into two stages, one is
grinding-ball-mill.html">manganese beneficiation plant the decomposition of slime and dispersed, the sediment separation. These stages can separately, also can at the same time. The
main purpose of the silt is dissociation, scattered and mixed and adhesion on the coarse grain of fine grain in the mud and clay. Now, the domestic use of desliming equipment has a water
gun, all kinds of washing machine, etc. With 125 mm or 75 mm hydrocyclone directly from fragmented slime (after classifying) first, desliming directly after use lie between screen (after
classifying) first. In foreign countries, the use of cyclone between 50 mm and 25 mm in diameter.
Flotation process specific as follows:
1, crushing screening: natural tin ore dressing plants by vibrating feeder evenly send to early broken jaw broken, after the early broken stone of tin ore dressing plants by cone break for
sorting。
2, ball mill, sorting, unqualified return classifier for classification, the return of the qualified ball mill continue to grinding, and then sent to the next link;
sent to fully mixed stirring barrels and drugs, and then flow into the flotation flotation machine;
4, after dehydration tin into thickener dewatering, and then by the dryer for drying. Tin ore dressing plant flotation process proportion stone recovery process improve tin ore dressing
plants. But because of its flotability is poorer, and the slime gangue mineral is more, both want to find a good prescription, and want to find a good prescription, and to find out good
flotation technology, fine cassiterite flotation can have good indicators.
Through the constant research of fine particle flotation theory, has appeared in a series with fine tin ore dressing plants in industrial application prospects of new technology, there are
mainly three points:
stirring pulp add appropriate adjustment agent (pH adjusting agent and the gangue minerals dispersant), scatter all kinds of minerals, then add the selective flocculant, the purpose of
mineral flocculant group that condensed, gangue mineral in a decentralized state, according to the ore properties along with a variety of methods (gravity separation, magnetic separation
and flotation, etc.), the purpose of mineral and gangue mineral separation.
(2) the carrier flotation process carrier flotation process is graded using ordinary flotation ore grain as the carrier, make fine particles cover on the carrier surface, can be used for
similar mineral or heterogeneous mineral. By using the method of branch type flotation sank a tin of fine mud sample flotation foam products branch carrier flotation experiment research,
the branch carrier flotation technology of tin thin mud flotation branch, branch and carrier flotation and sink sample flotation results was 9.73%, the tin tin concentrate recovery rate was
84.37%; Experimental results show that the overflow sample carrier flotation, tin recovery rate 15% higher than that of conventional flotation, the purpose of increasing the recovery ratio
of fine mud tin.