Iron symbiotic non-ferrous metal copper-lead-zinc comprehensive recovery process

Abstract

The invention relates to an iron symbiotic non-ferrous metal copper-lead-zinc comprehensive recovery process. The process comprises the following steps of carrying out medium-weak activation and weak collection on copper-lead-zinc mixed flotation, strongly removing chemicals, separating low-concentration copper from lead and zinc, and separating lead and zinc minerals by using a small-stroke large-stroke-frequency micro-fine mud shaking table. By means of hydrophobicity of copper-lead-zinc minerals after iron separation, copper-lead-zinc weak activation and weak collection complete mixed separation is achieved, the agent cost is saved, and the problems that due to strong activation and strong collection of a traditional process, the technical index of copper and lead-zinc separation is poor, and concentrates are high in mutual content are solved; copper is separated from lead and zinc by adopting low-concentration strong reagent removal, and copper and lead and zinc minerals are separated by utilizing the natural floatability of copper minerals on the basis of cleaning and activation of dilute sulfuric acid and pyrosulphurous acid; and lead-zinc concentrate adopts the micro-fine mud shaking table, the separation process of micro-particle lead-zinc minerals is strengthened by small stroke, large stroke-frequency and no flushing water, single lead concentrate and zinc concentrate are obtained, and the problems that the single lead concentrate and zinc concentrate cannot be obtained through iron-symbiotic copper-lead-zinc separation, the separation efficiency is low, the concentrate mutual content is high, and the concentrate value is low are solved.

Description

technical field [0001] The invention relates to the technical field of mineral flotation separation technology, in particular to a comprehensive recovery technology of iron symbiotic non-ferrous metal copper, lead and zinc. Background technique [0002] Iron symbiotic copper-lead-zinc non-ferrous metal minerals have the following characteristics: 1) Iron symbiotic copper-lead-zinc ore has a close intercalation relationship, and the intercalation particle size is fine, and fine grinding can realize the monomer dissociation of copper, lead, and zinc; 2) Iron symbiotic copper-lead The comprehensive recovery of zinc ore mostly starts with the iron dressing tailings. The iron dressing tailings pulp includes ferromagnetic tailings and ferromagnetic concentrate desulfurization flotation foam. More than 70% of the surface of the sulfide minerals in the iron tailings pulp has been hydrophobic. [0003] At present, the commonly used copper, lead and zinc separation methods include cop...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a comprehensive recovery process for iron-associated non-ferrous metals copper, lead and zinc, to solve the problem of separation efficiency during the existing comprehensive recovery of iron-associated copper, lead and zinc. Low, poor indicators, high mutual content of concentrates, unable to obtain single lead concentrate, zinc concentrate