Flotation method of vulcanizing lead and zinc by weak acid full pulp

Abstract

The invention discloses a flotation method of vulcanization lead and zinc by weak acid full pulp. Weak acid full pulp flotation is conducted to the vulcanization lead and zinc in ores or slag comprising the vulcanization lead and zinc according to the flotation technology, the flotation technology comprises that ore grinding and pulp mixing are conducted to the ores or the slag in the vulcanization lead and zinc, the weak acid pulp with the potential of hydrogen (PH) value of 1 to 7 is prepared, and then the weak acid full pulp flotation is conducted so that ZnS concentrate, PbS concentrate and FeS2 concentrate are made. The flotation method of the vulcanization lead and zinc by the weak acid full pulp has the advantages of being small in device investment, low in energy consumption, small in consumption of flotation reagents, capable of obtaining zinc sulfide with a higher concentrate grade, and high in lead and zinc recovery rate.

Description

technical field [0001] The invention relates to the technical field of flotation of lead-zinc sulfide in lead-zinc sulfide ore or slag. Background technique [0002] my country is the largest producer and consumer of zinc metal. The shortage of zinc ore resources has become increasingly prominent. About one-third of zinc raw materials need to be imported every year. Insufficient supply of resources has become an important factor restricting the sustainable development of society. However, my country's zinc ore resources, especially low-grade and high-impurity zinc ore, have not been rationally utilized due to the lack of effective processing technology. [0003] At present, there are at least 50 million tons of low-grade refractory complex oxygen-sulfur mixed lead-zinc ores in my country. In particular, there are more than 40 million tons of such ores in the Lanping mining area in western Yunnan, with a potential economic value of more than 30 billion yuan. Due to The nature...

AI Technical Summary

Problems solved by technology

However, there are still long technological processes, many equipment and facilities, and it is difficult to treat tail gas and tailings slag in a harmless and environmentally friendly manner, which is not easy to operate and control. The energy consumption of coal combustion is high, the metal recovery rate is low, and the production cost is relatively high. Economical Benefits, environmental benefits and social benefits are relatively low

In addition, in the prior art flotation of zinc sulfide and oxygen-sulfur joint mixed separation, the flotation of lead-zinc ore and zinc oxide is usually carried out under weakly alkaline conditions with a pulp pH value of 8-11, while under weakly alkaline conditions In the flotation, not only the equipment investment is large, but also the types of flotation reagents used are large, the consumption is large, the water and electricity consumption is high, and the grade and recovery rate of the obtained zinc sulfide concentrate, lead sulfide concentrate and zinc oxide concentrate are relatively low. Low

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