56results about How to "Improve flotation index" patented technology

The invention provides a method for roughing and tailings-discarding of fine rutile ore by multi-stage floatation, relating to the technique for roughing and tailings-discarding of fine rutile ore by multi-stage floatation and belonging to the technical field of mineral processing engineering. The method of the invention comprises the following steps: firstly, conducting the reverse floatation of rutile by using sodium oleate as a collector according to the characteristics that aluminum sulfate can inhibit the rutile and activate silicate minerals in varying degrees, so as to effectively deslime in the process of reverse floatation; and then, conducting the forward floatation of rutile by using lead nitrate (or lead acetate) as an activator of rutile and using sodium alkyl hydroxamate and benzyl arsonic acid (or styryl phosphonic acid) as a combined collector according to the characteristic that gangue minerals can be inhibited on a combined basis under the synergistic action of sodium fluorosilicate, carboxymethylcellulose and the residual aluminum sulfate in the ore pulp, briefly, the method of the invention can realize the roughing and tailings-discarding of fine rutile by the multi-stage floatation comprising the following steps: firstly, conducting the reverse floatation by inhibiting the rutile; and then, conducting the forward floatation by activating the rutile. The method of the invention has the advantages that the enrichment ratio and recovery rate of rutile are high, the tailings of rutile ore can be discarded thoroughly and the mineral processing cost of rutile can be greatly reduced.

The invention relates to a beneficiation method for comprehensively reclaiming complex multimetal micro-grain cassiterite sulphide ore by adopting a magnetic separation-flotation combined technology. According to the dissemination characteristics of the ore, more than 95% of the ore is ground to be -200 mesh at first, and then magnetic mineral in the ore is removed through high-gradient magnetic separation; according to the flotability difference of the mineral, sulphide ore flotation is performed on the magnetic separation tailings, and follow-up beneficiation is performed on the flotation concentrate to obtain copper and zinc concentrate reaching the sale standard; cassiterite flotation is performed on the flotation tailings, and through the adoption of a combined restrainer (sodium carboxymethyl cellulose and sodium silicate) and a hydroximic acid-type collector, and control over the flotation temperature and the reagent action time in the flotation process, tin concentrate of which the grade and recovery rate are higher than 40% can be obtained. Through the adoption of the technological process, the consumption of flotation reagents (especially tin flotation reagent) is lowered greatly; cassiterite flotation and sulphide ore flotation are separated, so that the stability of the flotation results can be ensured, and the achievement of automatic control over the process is facilitated; all metal is utilized comprehensively, which conforms to the national condition of resource shortage in our country.

The invention discloses a high-calcium scheelite flotation collector and a preparation method and an application method thereof and belongs to the technical field of solid mineral resource sorting. The preparation method comprises the following steps of: by taking foots, hydroxylamine hydrochloride, sodium hydroxide, sulfuric acid and the like in a coconut oil refining process as raw materials, adding the treated foots in a certain molar ratio into a hydroxylamine hydrochloride aqueous solution at a certain temperature; then dropwise adding a sodium hydroxide aqueous solution with a certain concentration, and performing acidification after the dropwise adding reaction is finished; dehydrating and washing the acidified product to obtain coconut alkylhydroxyoxime acid; and then compounding the coconut alkylhydroxyoxime acid and soy acid in certain percentages by mass to obtain a mixture, and then saponifying the mixture to obtain the high-calcium scheelite flotation collector. The collector prepared by the preparation method disclosed by the invention is stable in property, good in floating index, stable in foam, high in adaptability, low in cost and non-toxic, and meanwhile, can efficiently separate scheelite from calcium-containing minerals in the high-calcium scheelite.

The present invention relates to floatation equipment for separating non-ferrous metal mineral, ferrous metal mineral and non-metal mineral, and is especially foam pushing device for large floatation machine. The foam pushing device is one double foam pushing cone structure comprising an inner foam pushing cone, an inner foam channel, outer foam pushing cone and outer foam channel. The foam pushing device separates the foams inside the floatation tank into two parts, the marginal part exhausted through the outer foam channel and the middle part exhausted through the inner foam channel, and the shortened foam conveying distance ensures the fluent exhaustion of floatation foam and is favorable to the floatation process.

The invention relates to a method for using a collector prepared from illegal cooking oil in fluorite flotation. The collector is prepared by the following steps: (a) purifying and extracting illegal cooking oil; and (b) subjecting the purified and extracted illegal cooking oil obtained by the step (a) to a hydrolysis reaction and thus obtaining the collector for use in ore floatation. When the collector prepared from the illegal cooking oil, which is used in the invention, is used in fluorite flotation, the selectivity of the collector is improved, and the technical index and economic index of the flotation can be improved. As the illegal cooking oil is used as the raw material for preparing the collector, the technical scheme adopted by the invention has a great significance for avoiding environment pollution, simplifying production process, reducing food safety threats and the like.

The invention discloses a collophanite reverse flotation collector and a preparation method and an application method thereof, and belongs to the technical field of solid mineral resource separation. Vacuum five-line phenol extract oil, a diluent, fuming sulphuric acid, sodium hydroxide and the like are used as raw materials, after raw oil and the diluent are mixed according to a certain mass percent, the fuming sulphuric acid is fed into a reaction still for sulfonation, stirring and washing are conducted after a sulfonation reaction is completed, still standing is conducted for layering, an organic layer is taken for primary saponification in a saponification reaction still, and sulphonate is obtained; and the obtained sulphonate and soy acid are compounded into a mixture according to a certain mass percent, the mixture is subjected to secondary saponification, and the anionic high-calcium (high-magnesium) collophanite reverse flotation collector is obtained. The collector is simple in preparation process, high in adaptability (such as the temperature and the ore pulp pH), good in mud resistance, high and stable in flotation index, low in cost and free of toxicity; and when the collector is applied to high-calcium (high-magnesium) collophanite flotation, the high-phosphate concentrate grade (P2O5) can be remarkably improved, the recovery rate of high-phosphate concentrate can be remarkably increased, and the impurity content of the concentrate is lowered.

The invention relates to a lead-antimony-zinc sulfide ore bulk flotation collecting agent and preparation and application thereof. The gearbox left box body shell is prepared by mixing tert-dodecyl mercaptan and emulsified kerosene. The mass ratio of the tert-dodecyl mercaptan to the emulsified kerosene is 1:(0.9-1.2). The lead-antimony-zinc sulfide ore bulk flotation collecting agent has the better collecting effect on sulfide, and can be applied to lead-antimony-zinc sulfide ore bulk flotation. The lead-antimony-zinc sulfide ore bulk flotation collecting agent has the good foaming property, can adopt a small amount or no foaming agent, and can decrease the consumption of an activating agent copper sulfate; compared with traditional MA or single use of emulsified kerosene and tert-dodecyl mercaptan, the grade and recycling rate of sulfide can be increased, and types and consumption of medicament are reduced.

A modified chemical for increasing the floatation quality of Mo-W ore is an inorganic adjusting agent composed of sulfuric acid and water glass proportionally. Its preparing process includes such steps as adding the sulfuric acid solution to water glass solution proportionally while stirring, and post-stirring for several minutes.

The invention discloses a bismuth sulfide mineral inhibiting agent and application thereof. The inhibiting agent comprises the following components in parts by mass: 2-5 parts of hydrogen peroxide, 3-4 parts of gallic acid, and 1-2 parts of dextrin. In a flotation process of sulfide minerals containing bismuth, 50-500 g/t combined inhibiting agent is added in each flotation according to each tonnage of raw ore minerals, so that the inhibition of the sulfide minerals containing bismuth can be realized. The bismuth sulfide mineral inhibiting agent has the advantages of high acting effect, low use level and the like, is free of using such high-consumption medicaments as poisonous cyanides, lime and sodium sulfide to reduce environmental pollution, meanwhile, reduces the beneficiation cost, and improves the sorting index.

A flotation feed desliming pool comprises a feeding pipe, a flotation feeding pump, a feeding distribution tank, an overflow tank and a flow distribution area, wherein the feeding distribution tank, the overflow tank and the flow distribution area are disposed above the desliming pool. The feeding distribution tank is arranged above the desliming pool and connected with the feeding pipe, and a plurality of through holes are uniformly distributed on a transverse partition which is arranged in the middle of the feeding distribution tank. The flow distribution area comprises a vertical pipe combination unit arranged above the middle of the desliming pool, the vertical pipe combination unit consists of a plurality of vertically arranged pipelines which are formed by mutually stacking a plurality of glass epoxies bent by compression, and the cross section of each pipeline is regular hexagonal. A gap of coal dressing equipment is filled by the flotation feed desliming pool by means of innovative measures, desliming process of flotation feed is realized by the aid of the hydraulic classification principle, and the flotation feed desliming pool is simple in structure, convenient in operation, effective in desliming and high in operating efficiency. Further, underflow of the desliming pool is conveyed by the feeding pump to floatation operation, the flotation feed desliming pool integrates functions of desliming and feed buffering and is low in investment and quick in effectiveness.

The invention provides an ultralow-energy-consumption grinding technology for non-ferrous metal ore and belongs to the field of ore selection. The technology is mainly composed of grinding processes such as rough crushing, middle crushing, fine crushing, high-pressure rolling, stirring grinding and sand grinding. The technology aims at most non-ferrous metal ore with medium rigidity, and the totalenergy consumption of the ultralow-energy-consumption grinding technology can be controlled below 15 kwh/t; compared with a traditional three-segment one-closed-circuit ore crushing and two-segment full-closed-circuit ore grinding technology and a traditional rough crushing and SAB technology, the technology has the advantages that the total energy consumption is lowered by 30% or above, the operation technology is compact and low in cost, industrial production and allocation are easily achieved, and the technology is suitable for application and popularization.

The invention discloses a combined reagent for zinc-containing ore flotation and a using method thereof, and belongs to the field of mineral flotation reagents. The combined reagent comprises, by mass, 5-40% of hydroxamic acid (the length of a carbon chain is C6-C8), 10-50% of ethidene diamine, 10-60% of xanthate (the length of a carbon chain is C2-C5) and 5-40% of palmitoyl glycine. The reagent is soluble at normal temperature, free of toxins, efficient and environmentally friendly. The zinc-containing ore flotation index can be improved. Compared with a conventional zinc oxide flotation collector, the combined reagent has the advantages of being small in reagent consumption and low in price, zinc sulfide and zinc oxide do not need to be separately graded in the flotation technology, zincsulfide ore and zinc oxide ore can be recycled at the same time, and the combined reagent especially has a good flotation effect on low-grade zinc oxide ore with a relatively high sludge content.

The invention discloses application of a 1,2,4,5-tetrazole-3-thioketone flotation collecting agent. The application is characterized in that a 1,2,4,5-tetrazole-3-thioketone compound as a mineral flotation collecting agent is applied to minerals containing copper, silver or gold to recycle valuable metal in a flotation manner, and compared with a common flotation collecting agent in prior art, enriching and recycle of copper, silver or gold minerals can be effectively improved.