Method for recovering lead, zinc and copper from tailings

Abstract

The invention provides a method for recovering lead, zinc and copper from tailings. The method for recovering lead, zinc and copper from tailings comprises the steps that a breaker is controlled to break the tailings, a ball grinding mill is controlled to grind the tailings, and 1950-2050 grams of zinc sulfate per ton is added into a casting material port; 490-510 grams of acetic acid carbon per ton, 25-35 grams of oil number two per ton and 4900-5100 grams of lime per ton are added into the tailings, and the mixture is stirred for conducting roughing on the tailings to obtain zinc concentrateand copper-lead bulk concentrate; 490-510 grams of acetic acid carbon per ton, 4900-5100 grams of lime per ton and 900-1100 grams of sodium sulfite per ton are added into the copper-lead bulk concentrate, the mixture is stirred for conducting concentration on the copper-lead bulk concentrate, and coper concentrate and lead concentrate are obtained. The design of adding the zinc sulfate achieves the effect of an activator, the design of adding ethyl sulfur carbon achieves the effect of a collecting agent, the design of adding the oil number two achieves the effect of a foaming agent, the design of adding the acetic acid carbon, the lime and the sodium sulfite achieves the effect of an inhibiting agent, and the effect of separating the copper concentrate from the lead concentrate is improved.

Description

technical field [0001] The invention relates to the technical field of tailings recovery, in particular to a method for recovering lead, zinc and copper from tailings. Background technique [0002] As we all know, copper, lead, and zinc are the main non-ferrous metals, and they are widely used in various fields of industrial or civil products. At present, the world's annual copper consumption is 20 million tons, China's is 5 million tons, and China's output is 2.5 million tons; the world's annual lead consumption is 7.1 million tons, China's is 1 million tons, and China's output is 1.5 million tons tons; the world's annual zinc consumption is 11 million tons, China's is 2.2 million tons, and China's output is 3 million tons. Therefore, in order to ensure domestic supply and external sales, the recovery of lead, zinc and copper from tailings Particularly important. [0003] During the use of the existing methods for recovering lead, zinc and copper from tailings, the recove...

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Problems solved by technology

[0003] During the use of the existing methods for recovering lead, zinc and copper from tailings, the recovery accuracy is low, and it is not possible to recover copper, lead, and zinc from tailings effectively and with high precision, and the existing method of recovering from tailings The recovery efficiency of the method for recovering lead, zinc and copper in China is low, which reduces work efficiency

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