Ore dressing combination process for processing high-slime lead-zinc oxide and sulfide mixed ore

A combined process and mixed ore technology, applied in the directions of flotation, solid separation, wet separation, etc., can solve the problems of non-selectivity of particle size, partial sliming of fine particle, serious problems, etc., and achieve good economic benefits and stable operation. , the effect of high technical indicators

Active Publication Date: 2013-07-03
有研资源环境技术研究院(北京)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In production practice, it is found that stage grinding and separation can improve the over-crushing and muddying of minerals to a certain extent, but there are still the following problems: (1) One-stage grinding cannot dissociate valuable minerals with good crystallization completely, so it affects the concentrate grade; (2) The second stage grinding has no selectivity to the particle size, and the fine particle size is more serious in the second stage grinding process.

Method used

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  • Ore dressing combination process for processing high-slime lead-zinc oxide and sulfide mixed ore
  • Ore dressing combination process for processing high-slime lead-zinc oxide and sulfide mixed ore
  • Ore dressing combination process for processing high-slime lead-zinc oxide and sulfide mixed ore

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Embodiment 1

[0028] In this embodiment, the high-mud lead-zinc-oxygen-sulfur mixed metal ore in Huize, Yunnan is selected, and the ore is mainly ore of useful minerals galena, white leadite, sphalerite and smithsonite. The content of lead and zinc in lead oxide and zinc minerals accounts for 25wt% and 30wt% of the total lead and zinc contents of the minerals respectively. In addition to these useful minerals composed of beneficial elements, there are also a large number of gangue minerals dolomite, calcite, Clay minerals and a small amount of quartz. The lead content in the ore is 4.5wt%, zinc 4.8wt%.

[0029] Utilize the method of the present invention, be about to wash raw material ore first with the vibrating screen that sieve hole is 4mm, the part under the sieve adopts the spiral classifier that classifying granularity is 250 μm to carry out primary classification, and the fine-grained grade part is separated through the short cone swirling flow that granularity is 100 μm The long co...

Embodiment 2

[0034] The high-mud lead-zinc-oxygen-sulfur mixed metal mine in Huize, Yunnan, ores are mainly useful minerals galena, white lead ore, sphalerite, sphalerite and smithsonite. The content of lead and zinc in lead oxide and zinc minerals accounts for 28wt% and 30wt% of the total lead and zinc contents of the minerals respectively. In addition to these useful minerals composed of beneficial elements, there are also a large number of gangue minerals dolomite, calcite, Clay minerals and a small amount of quartz. The lead content in the ore is 4.8wt%, zinc 5.3wt%.

[0035]Utilize the method of the present invention, be about to wash raw material ore first with the vibrating screen that sieve hole is 4mm, the part under the sieve adopts the spiral classifier of 250 μm of grading particle size to carry out primary classification, and the fine-grained part is separated by the short cone cyclone with particle size of 100 μm and a long cone cyclone with a separation particle size of 38 ...

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Abstract

The invention relates to an ore dressing combination process for processing a high-slime lead-zinc oxide and sulfide mixed ore. The ore dressing combination process comprises the steps as follows: crushing a raw ore and washing by a vibration sieve; carrying out primary classification on parts under the sieve and desliming fine particle fractions after primary classification through a two-stage one-closed-circuit process; combining parts over the sieve with rough particle fractions after primary classification, carrying out primary grinding, carrying out secondary classification on ground products, carrying out table-shaking gravity separation on rough particle fractions after secondary classification, and enabling fine particle fractions after secondary classification to enter a long conical cyclone for desliming; obtaining concentrate, namely lead concentrate by gravity separation, carrying out primary grinding on middlings obtained by gravity separation, combining tailings obtained by gravity separation with settled sand obtained by desliming in a short conical cyclone, carrying out ore grinding, and carrying out floatation separation to obtain lead sulfide concentrate, zinc sulfide concentrate and lead-zinc oxide bulk concentrate in sequence; and carrying out floatation separation on slime to obtain lead-zinc oxide and sulfide bulk concentrate. The ore dressing combination process is stable in operation, has very good technical indexes, and can bring very good economic benefits to enterprises.

Description

technical field [0001] The invention relates to a combined ore dressing process for processing high-mud lead-zinc-oxygen-sulfur mixed ore. Background technique [0002] Lead-zinc-oxygen-sulfur mixed ore is generally more complicated, including lead oxide and zinc ore, as well as lead sulfide and zinc ore. This kind of ore is easy to be crushed and slimed. Generally, it not only contains primary slime, but also easily produces secondary slime during the grinding process. The mud in the ore, especially the high content of mud, has a great influence on flotation. First, in the flotation operation, the adhesion strength of particles with different specific surface areas to air bubbles is different. Since the fine mud has a large specific surface area, it is non-selectively adsorbed during the flotation process, and is preferentially combined with air bubbles to float up, making it difficult for coarse particles to float due to insufficient drug dosage. At the same time, part o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B1/00B03D1/00
Inventor 李文娟宋永胜陈勇
Owner 有研资源环境技术研究院(北京)有限公司
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