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New environment-friendly copper ore dressing equipment copper ore flotation technology copper ore dressing method and copper ore dressing process I.
flotation of disseminated copper ore: generally, a relatively simple process is adopted. After one-stage grinding, the fineness of - 200 mesh accounts for about 50% ~ 70%,
one roughing, two to three cleaning and one to two scavenging.
If the impregnation particle size of copper minerals is relatively fine, the stage grinding process can be considered. Most concentrators dealing with bornite adopt the stage grinding and beneficiation process of regrinding and beneficiation of coarse concentrate, which is essentially a mixed preferential flotation process. High grade copper concentrate and sulfur concentrate are obtainedthrough one-stage rough grinding, roughing and scavenging, and then the rough concentrate is grinded and then cleaned.
The coarse grinding fineness - 200 mesh accounts for about 45% ~ 50%, and the regrinding fineness - 200 mesh accounts for about 90% ~ 95%. 2、 Flotation of dense copper ore: due to the dense symbiosis of chalcopyrite and pyrite, pyrite is often activated by secondary copper minerals. The content of pyrite is high, which is difficult to inhibit and separate. In the separation process, copper concentrate and sulfur concentrate are required to be obtained at the same time. Usually, the tailings after copper separation are sulfur concentrate. If the gangue content in the ore exceeds 20% ~ 25%, it needs to be sorted again in order to obtain sulfur concentrate. Two stage grinding or stage grinding is often used to treat dense copper ore, and the grinding fineness is required to be fine. The dosage of reagent is also large, more than 100g / (t raw ore) of xanthate and more than 8 ~ 10kg (t raw ore) of lime.
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