Method for improving metal recovery rate during mineral dressing of copper-lead-zinc-sulfur-containing refractory ore
A recovery rate, copper-lead technology, applied in flotation, solid separation, etc., can solve the problems of high loss of copper metal, reduce the quality of copper concentrate, and the fineness cannot reach the separation degree of mineral dissociation in the separation operation, so as to improve the recovery rate effect
Inactive Publication Date: 2011-02-16
BAIYIN NONFERROUS GROUP
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Problems solved by technology
However, due to the complex and changeable properties of the Xiaotieshan polymetallic ore, the ore-like copper minerals in production in recent years are not easy to float. In the case of different grades, the copper content of the lead-zinc concentrate is as high as 3.0%, that is, copper metal is lost in the lead-zinc concentrate
If there is no dehydration and drug removal, the fineness of the three-stage grinding can not meet the requirements of mineral dissociation in the separation operation, but it is difficult for copper minerals to float up after dehydration and drug removal
For this kind of ore, the method of adding collector butyl xanthate or Z-200 to the mixed flotation operation was used to force the flotation of copper minerals. Strong, result
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[0019] The following examples take the Xiaotieshan polymetallic ore containing copper, lead, zinc and sulfur as an example.
[0020] A method for increasing the metal recovery rate during the beneficiation of refractory ore containing copper, lead, zinc and sulfur. The process principle and flow are as follows: the ore is fed into the first stage of grinding operation through the belt; the first stage of grinding products enters the mixing operation, and the mixed operation produces After the second stage grinding operation, the copper-lead-zinc-sulfur mixed concentrate enters the desulfurization operation. The desulphurization operation produces copper-lead-zinc mixed concentrate and sulfide concentrate; the copper-lead-zinc mixed concentrate produced by the desulfurization operation is subjected to the third-stage grinding operation After the operation, it enters the separation roughing operation, the separation roughing foam enters the beneficiation operation, the beneficiation...
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The invention discloses a method for improving metal recovery rate during mineral dressing of copper-lead-zinc-sulfur-containing refractory ore. The method is characterized in that bulk concentrate of copper, lead and zinc produced by desulfurization operation is dehydrated and subjected to reagent removal by a slope plate thickening box; overflow water of the thickening box is combined with lead-zinc concentrate; after 200 to 300g/T of sodium sulfide added into the underflow of the thickening box is subjected to three-section ore grinding, and 100 to 400g/T of sodium sulfide, 10 to 25m<3>/h of sulfurous acid and 5g/T of No.2 oil are added, separation and roughing are performed; the separated and roughed foam enters a cleaning process; and copper concentrate is produced by cleaning operation. Because the copper, lead, zinc and sulfur-containing multi-metal copper mineral of Xiaotieshan is ore which is difficult to float, and the difference of the floatability of the copper mineral and the lead-zinc mineral is small, the separation can be performed by using the small difference, the index of the separation operation is obviously superior to the index of a supplementary collecting agent and other indexes of a medicament with collecting and foaming performance, so that the recovery rate of the copper is improved on the premise that the lead-zinc recovery rate is not lost or the loss is low.
Description
technical field [0001] The invention relates to a method for increasing the metal recovery rate in the beneficiation process of polymetallic refractory ores, in particular to a method for increasing the metal recovery rate in the beneficiation process of refractory ores containing copper, lead, zinc and sulfur. technical background [0002] In the separation process of Xiaotieshan polymetallic ore containing copper, lead, zinc and sulfur, lead-zinc inhibitors are used in the separation operation, and copper minerals are flotationed with the remaining oil and medicine after dehydration and drug removal using the mixed desulfurization foam. Inhibits lead-zinc minerals. However, due to the complex and changeable properties of the Xiaotieshan polymetallic ore, the ore-like copper minerals in the production in recent years are not easy to float. In the case of different grades, the copper content of the lead-zinc concentrate is as high as 3.0%, that is, copper metal is lost in t...
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Inventor张文乾赵天岩李娟李轶才李永祥穆晓辉姜文波赵影孙志雄张慧秋刘晓宁王宗祥张明忠韩应夫梁王宁李玉明张进水朱勇衡
OwnerBAIYIN NONFERROUS GROUP