A beneficiation method of sulphide ore relates to improvement of a beneficiation method of sulphide ore, and especially adopts a combined flotation method with a cylindrical grinder. The beneficiation process comprises the steps of performing first-stage screening of sulphide ore to obtain a first-stage coarse particle concentrate A1 and a first-stage tailing product A2; and the beneficiation process is characterized in that the first-stage tailing product A2 is subjected to a combined screening process by a cylindrical grinder. The method of the invention can effectively overcome the problem that sulphide ore with a small disseminated grain size and complex material composition cannot be recovered effectively with routine flotation methods in a flotation process, adopts a combined screening process of first-stage tailings by using a cylindrical grinder, and achieves satisfied metal recovery effect on ultrafine particle fractions in the ore by beneficiation with a cylindrical grinder.

Beneficiation method of sulphide ore

The invention provides a copper and sulphur separation method for copper-sulphur ore and relates to a method for separating copper from sulphur in copper-sulphur ore flotation rough concentrate. The copper and sulphur separation method for the copper-sulphur ore is characterized in that the steps of a treating process comprise that (1) ore grinding is conducted on copper-sulphur rough concentrate obtained through flotation; (2) after the ore grinding, a sulfur inhibitor selected from sodium sulfite, sodium metabisulfite, sodium bisulfate and sodium thiosulfate is added to the copper-sulphur rough concentrate, and a sulfur inhibition reaction is conducted; (3) a copper selective collector is added, and flotation is conducted; (4) a humate inhibitor is added to a flotation froth product; after an reaction with mixing is conducted, concentration is conducted; and (5) a humate inhibitor is added to a concentration froth product; after an reaction with mechanical mixing, concentration is conducted again, and copper concentrate separated from the sulphur is obtained. The copper and sulphur separation method for the copper-sulphur ore is simple in technology; lime and other highly alkaline inhibitors are not required to be added; required reagents are extensive in source and easy to prepare and add; the prepared reagents are good in flowability, easy to control, and not liable to block pipelines. The copper and sulphur separation method for the copper-sulphur ore is a novel copper and sulphur separation method.

Copper and sulphur separation method for copper-sulphur ore

The invention discloses a method for recycling copper minerals from high-sulfur rebellious copper ore step by step. The method comprises the following steps: (1) crushing and grinding raw ore; (2) mixing and crude selection; (3) mixing and scavenging I; (4) mixing and scavenging II; (5) separation and fine selection I; (6) separation and fie selection II; (7) grinding of reground middling ore; (8) regrinding and crude selection; (9) regrinding and scavenging I; (10) regrinding and scavenging II; (11) regrinding and fine selection I; (12) regrinding and fine selection II. The beneficial effects are as follows: the method for recycling copper minerals from high-sulfur rebellious copper ore adopts mixing and bulk flotation, regrinding and selection of middling ores and step-by-step recycling; the method solves the problems of lower copper concentrate grade and recycling rate, over-high loss ratio of copper in sulfur concentrate caused by non-uniform copper and sulfur insetting grain size and thin copper ore insetting grain size; the method is important to improve economic benefits of enterprises and societies.

Method for recycling copper minerals from high-sulfur rebellious copper ore step by step

The invention discloses a mineral beneficiation method of complex and refractory high-grade copper sulfide ore. The method comprises the steps that high-grade copper sulfide raw ore is crushed; the ore is ground; pulp is adjusted; high-grade copper sulfide ore rough scavenging is performed; and concentrate roughing, grinding and selection are performed in sequence. According to the mineral beneficiation method of the complex and refractory high-grade copper sulfide ore, through an efficient inhibitor XKY-03, inhibition of pyrite minerals is enhanced selectively, and inevitable activation of ions to the pyrite minerals in the ore pulp is eliminated selectively; through an efficient collector XKP-03, collecting of copper sulfide minerals is selectively enhanced; and meanwhile, before flotation, by adopting quick lime and NaOH, the pH of the ore pulp is adjusted to be strongly alkaline, then flotation is performed, part of the pyrite minerals is inhibited, influences of the pyrite minerals on flotation of the copper sulfide minerals are reduced, and accordingly, the copper sulfide minerals, the pyrite minerals and gangue minerals are efficiently separated. The mineral beneficiation method has the characteristics of being good in separation effect, stable in mineral beneficiation index, small in agent consumption amount, easy and convenient to operate and easy to operate and manageon site, is a novel method suitable for mineral beneficiation of the complex and refractory high-grade copper sulfide ore, and is suitable for application and popularization.

Mineral beneficiation method of complex and refractory high-grade copper sulfide ore

The invention discloses an inhibitor and an ore dressing method of high-sulfur refractory copper and sulfur ore. The inhibitor is composed of lime and sodium hexametaphosphate at a mass ratio of 2.0-4.0:0.2-0.6 through mixing. The ore dressing method comprises following steps: raw ore grinding, copper sulfur bulk flotation coarse roughing, copper sulfur bulk flotation scavenging, copper sulfur bulk rough concentrate secondary grinding, copper sulfur bulk rough concentrate refining and refining scavenging, copper sulfur bulk concentrate separating coarse roughing, and copper sulfur separating refining. According to the ore dressing method, bulk rough concentrate secondary grinding is carried out, and then bulk flotation refining is carried out, so that further removing of a part of gangue is realized; a high efficiency inhibitor is adopted for reinforcement of inhibition on iron sulfide ore, and elimination activation of unavoidable ions in ore pulp on ferric sulfide ore, and at last, high efficiency separation of copper sulphide ore, ferric sulfide ore, and gangue is realized. The ore dressing method is simple and convenient; agent consumption amount is reduced; waste water high alkalinity problem is solved; copper sulfur separation effect is excellent; at laste, high grade copper concentrate and sulfur concentrate are obtained; and the ore dressing method is suitable for popularization and applications.

Inhibitor and ore dressing method of high-sulfur refractory copper and sulfur ore

The invention belongs to mineral processing field, relates to a beneficiation method, and particularly relates to a selection method for copper sulfide copper minerals and associated elements thereof. The method comprises rapid flotation, bulk flotation and selection period flotation. The rapid flotation step is composed of one-time rougher flotation and one-time selection. The bulk flotation step is composed of one-time copper-sulfur mixing rougher flotation and two-time scavenging. The selection period flotation step is composed of one-time rougher flotation, two-time selection, and three-time scavenging. By means of the selection method for the copper sulfide copper minerals and the associated elements thereof, rapid flotation is conducted on rough concentrate, pyrite is little in content, copper minerals are mainly monomers and rich aggregates, and selection is conducted under a weak alkali environment, so that lime is saved, and recycling of the associated elements is guaranteed at the same time. Bulk flotation is conducted on the rough concentrate, pyrite and copper-poor aggregates are high in content, regrinding high-alkali separation process is adopted, and therefore the tenor and the recovery rate of copper are enabled to be high.

Selection method for copper sulfide copper minerals and associated elements thereof

The invention belongs to the field of mineral processing, relates to a beneficiation method, and particularly relates to a method of sorting copper sulfide ore flotation tailings. The method comprises the following steps: A, the tailings with copper and sulfur separated are dewatered through a thickener, wherein the content of the sulfur in the tailings is more than 20%, and the concentration of the tailings is 10-15%, and after the tailings are dewatered, the concentration of a bottom current is improved to 20-25%; B, the bottom current of the A step enters a whirlcone to grade, and the concentration of sinking sand of the whirlcone is improved to 30-40%, the whirlcone overflows, the concentration of the tailings is 10%, the content of the sulfur is 15%, the tailings are discharged to a tailings pond or are concentrated back to the step A; and C, the concentration of the sinking sand in the step B is 30-40%, the content of the sulfur is 25-35%, the sinking sand enters to a flotation system, acid is added in the sinking sand and are mixed with a pH value of 6.5-7.5, after flotation reagents are added, final sulfur concentrate is obtained after one-time rough concentration, one-time scavenging and two-time choiceness. Compared with the prior technology, the beneficiation method of recovering the sulfur from the copper sulfide ore flotation tailings has the advantages of being stable in technological process, small in dosage of sulfuric acid and high in grade of sulfur concentrate and recovery rate.

Wang Zhongwei

Papers

Selection method for copper sulfide copper minerals and associated elements thereof

Copper and sulphur separation method for copper-sulphur ore

Beneficiation method of recovering sulfur from copper sulfide ore flotation tailings