Dolomite-barite type lead zinc ore separation flotation method

The technology of barite and dolomite is applied in the field of separation and flotation of dolomite-barite lead-zinc ore, which can solve the problems of affecting the separation index of lead and zinc, over-crushing of barite, difficulty in recycling and the like, Achieve the effect of solving the problem of low flotation index, reducing the amount of ore and reducing the content of minerals
CN112958271AActive Publication Date: 2021-06-15INST OF RESOURCES COMPREHENSIVE UTILIZATION GUANGDONG ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF RESOURCES COMPREHENSIVE UTILIZATION GUANGDONG ACAD OF SCI
Publication Date
2021-06-15

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Abstract

The invention belongs to the technical field of mineral separation, and particularly discloses a dolomite-barite type lead zinc ore separation flotation method. The method comprises the steps: crushing dolomite-barite type lead zinc ore to screen out ore with the particle size being-20 + 2 mm, then feeding oversize fraction minerals after ore washing into a dense medium cyclone to be separated to obtain heavy products and light products; respectively draining the medium from the heavy product and the light product to obtain oversize products which are heavy minerals and light minerals; and carrying out coarse grinding and flotation on the heavy minerals to obtain sulphide ore flotation concentrate and non-sulphide ore, wherein the sulphide ore flotation concentrate is the mineral containing galena, sphalerite and pyrite, and the non-sulphide ore is the mineral containing barite. The method provided by the invention can realize separation of coarse-grained dolomite and sulphide ore, and fundamentally solves the problems that the dolomite is easy to be over-ground and argillized to cause foam stickiness, lead and zinc indexes are influenced and the like; and separation of sulfide ore and barite can be realized under the condition of relatively coarse granularity, so that a basis is provided for subsequent reselection and recovery of the barite.
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Description

technical field

[0001] The invention relates to the technical field of mineral separation, in particular to a separation and flotation method for dolomite-barite type lead-zinc ore. Background technique

[0002] At present, when the dolomite-barite-type lead-zinc ore is separated by beneficiation, the direct flotation method is generally used for separation, and the lead-zinc ore concentrate is obtained by beneficiation. On the one hand, the dolomite-barite type lead-zinc ore contains a large amount of dolomite, generally accounting for more than 60%. Dolomite is easy to be over-grinded in the grinding process, resulting in sticky foam during the flotation process. , has seriously affected the separation index of lead-zinc, which is one of the difficult problems of lead-zinc mineral processing at present; Grinding flotation causes the barite in it to be too crushed, making it difficult to recycle.

[0003] Therefore, it is necessary to study the characteristics of dolomite...

Claims

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