Beneficiation process of fine grain tin ore
Mo Feng and other studies have shown that the new collector GY-C3 has a good recovery effect on the fine cassiterite in the Dulong mining area. The closed-circuit test treats 1.327% of the raw material containing tin, and obtains a tin content of 6.487% and a recovery rate of 88.90%. Concentrate. The industrial test uses a pre-desulfurization- iron removal-three-stage de-sludge-secondary desulfurization process to treat 0.3%–0.5% of tin-containing raw materials, and can obtain tin concentrates containing 4%–5% tin and recovering more than 80%. . The tin concentrate contains 4%–5% tin. In order to obtain qualified tin concentrate, it is further treated with a fine mud shaker to obtain tin concentrate with about 40% tin and 50% recovery rate. 2.5%, rich in mines with an operating recovery rate of 50%.
Nongshengqin and other issues are aimed at the problem of serious muddying after ore grinding and low recovery rate. The Y-11 is used as a pyrite activator and MA as a pyrite collector for desulfurization. Sodium carbonate is a pH adjuster. , salicyl hydroxamic acid, hydroxamic acid, P86 is a cassiterite collector, the primary flotation can obtain 1.81% of the crude concentrate, the operation recovery rate is 80.86%, and then the flotation column can be used to obtain the tin concentrate grade 10.41. %, the work recovery rate is a good indicator of 84.13%.
Sun Yuxiu took a difficult refractory tin ore in Yunnan as the research object. After stage grinding and grading into the shaker, the grade and recovery rate of tin were significantly improved. The sulphurite ore is coarsely grounded by flotation desulfurization – the flotation tailings are classified into the shaker. The ore contains 2.34% tin, the tin concentrate contains 30.14% tin, the tin recovery rate is 39.56%; the rich medium mine contains 4.77% tin, the tin recovery rate is 22.74%; the poor middle mine contains tin 2.2%, the tin recovery rate is 20.84%, A total of 83.14% of tin was recovered from the three grades.
The other properties of a Xutai Hong beneficiation plant tailings, explore the use of heavy - float - Principles weight recovery process tailings mineral tin micro-fine particles. Through the use of heavy-floating-heavy combined process, the tin content of tin concentrate is 54.48%, the recovery rate is 24.73%, the grade of medium tin concentrate is 26.18%, the recovery rate is 5.91%, and the grade of low tin concentrate is 2.41%. The recovery rate is 18.23%.
Liu et al. studied the beneficiation process of fine-grained tin ore containing magnetite. The ore is produced in Sichuan, China, and the ore contains 0.39% tin and 23.20% iron. The results show that the best effect is to choose when the tin ore is broken to less than 0.01mm and 90%. The general process includes crushing, two-stage magnetic separation and shaker re-election, and finally iron concentrate (iron grade 61.69%, iron recovery rate 75.09%), tin concentrate (27.21% tin grade, 56.97% tin recovery) and sulfur Concentrate (40.86% sulfur grade, sulfur recovery rate 32.03%).
The size of the fine cassiterite in a certain plant of Guangxi Dachang is fine, and it is difficult to obtain the ideal sorting effect by re-election method. Jianghua used the joint collector BY–9 to carry out desulfurization-floating tin test on fine cassiterite, and obtained tin concentrate with a tin grade of 23.09% and a recovery rate of 70.63%, which effectively improved resource utilization.
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