Beneficiation process of polymetallic ore containing betafite
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A technology of polymetallic ore and niobium-titanium-uranium ore, applied in flotation, magnetic separation, solid separation, etc., can solve unfavorable mineral flotation separation, poor collector selectivity, difficulty in obtaining high-grade uranium-containing concentrates, etc. problems, to achieve the effect of reducing the cost of water smelting, reducing the amount of treatment, and improving economic benefits
Active Publication Date: 2017-07-07
BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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[0004] In view of the above-mentioned prior art, the purpose of the present invention is to provide a polymetallic ore beneficiation process containing niobium-titanium-uranium ore, reduce the cost of subsequent water smelting, and solve the problem of using reverse flotation gangue minerals such as sulfate minerals and carbonic acid in the prior art. For salt minerals, due to the poor selectivity of the collector used, it is not conducive to the flotation separation between minerals, and it is difficult to obtain high-grade uranium-containing concentrates
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Embodiment 1
[0058] Example 1, a laboratory beneficiation test was carried out on a certain niobium-titanium-uranium ore in my country by adopting the technical means described in the present invention. The deposit is a complex polymetallic niobium-titanium-uranium deposit, mainly containing barite, calcite, feldspar, quartz, pyrite, sulfide ore, titanite, hornblende, biotite, epidote, and magnetite , niobium titanium uranium ore and other minerals.
[0059] The grade of uranium in the ore is 0.015%, the grade of uranium in gravity concentrate is 0.065%, and the recovery rate of uranium is 73%. Gravity-separated concentrates are then ground to a fineness of -0.074mm, accounting for 60%, and the sulfide ores are first floated - magnetically separated iron. A sulfide ore concentrate with a uranium content of less than 0.01% can be obtained, which can be further processed to obtain a qualified sulfide ore concentrate (not described in detail in this invention). Sulfide ore flotation tailing...
Embodiment 2
[0061] Example 2, the uranium grade of a certain niobium-titanium-uranium ore is 0.03%, the uranium grade of the concentrate after gravity separation is 0.128%, and the uranium recovery rate is 76.68%. Gravity-selected concentrates are then ground to a fineness of -0.074mm, accounting for 60%. After flotation of sulfide ore and magnetic separation of iron, the uranium grade can be increased to 0.154%, and the uranium recovery rate is 76.13%. Then the uranium is recovered by flotation, and the flotation solid concentration 30%, pulp temperature 20°C, niobium-titanium-uranium ore collector use benzylhydroxamic acid, dosage 1000g / t, kerosene 300g / t as auxiliary collector, 2 # 50g / t of oil is used as a foaming agent, and the first rough, second refined, and first sweep, and medium ore are sequentially returned to the process for closed-circuit flotation, and a flotation concentrate with a uranium grade of 1.12% can be obtained. The flotation recovery rate is 92.69%, and the recover...
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Abstract
This invention belongs to the technical field of beneficiation, is suitable for beneficiation of polymetallic ore containing betafite, and particularly relates to a beneficiation process of polymetallic ore containing betafite. According to the beneficiation process of the polymetallic ore containing the betafite, the low-grade polymetallic ore containing the betafite is economically developed and utilized, and the process relates to a combined technological process of gravity concentration, magnetic separation and flotation. Firstly, ore is subjected to gravity concentration after ore grinding and classification, after gravity concentrate is reground, sulfide ore is subjected to flotation and iron minerals are subjected to magnetic separation, and sulfide concentrate and iron concentrate can be obtained; secondly, uranium-rich ore pulp after iron removed is then subjected to flotation so that the betafite can be recycled, by adding a betafite efficient collecting agent, the direct flotation technology of the betafite is adopted, and the high-grade and high-recovery-rate uranium concentrate can be obtained; when the uranium concentrate is subjected to subsequent hydrometallurgy processing for uranium extraction, the handling capacity can be greatly reduced, the hydrometallurgy cost is substantially reduced, and the economic benefits are remarkably improved; and by means of beneficiation, the sulfide ore, the iron minerals and other associated useful components can be comprehensively recycled, and resources are fully utilized.
Description
technical field [0001] The invention belongs to the technical field of ore dressing, is suitable for beneficiation of polymetallic ore containing niobium-titanium-uranium ore, and specifically relates to a process for beneficiating polymetallic ore of niobium-titanium-uranium ore. Background technique [0002] Some uranium deposits containing niobium-titanium-uranium minerals in China have large reserves and low grades. The average grade of uranium in the deposits is below 0.02%, and direct uranium hydrometallurgy has no economic benefits. Niobium-titanium-uranium ore is granular and suitable for mineral processing. Literature "Meng Guangshou, Zhao Manchang, Li Wenxia, etc. Research on the process of beneficiation and comprehensive utilization of low-grade uranium-containing niobium-titanium ore [J]. Uranium Mining and Metallurgy, 1982, 1 (3): 11-17." After removing iron from gravity concentrate ore and magnetic separation during mining, use reverse flotation to select ca...
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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/02B03B1/00B03C1/00
CPCB03B1/00B03C1/00B03D1/02
Inventor 李广刘志超强录德唐宝斌武翠莲
Owner BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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