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

The invention relates to a bauxite classification and floatation desilication method, in particular to a bauxite high-speed disc type classification-positive floatation desilication method. The bauxite high-speed disc type classification-positive floatation desilication method is characterized in that ore grinding products are subjected to two-stage classification, and obtained coarse grain ore pulp and fine grain ore pulp enter a floatation system to be floated. According to the bauxite high-speed disc type classification-positive floatation desilication method, the bauxite ore pulp is efficiently classified through a high-speed disc type classifier, and the classified ore pulp is floated. The problem that fine particles and coarse particles in bauxite difficult to float are mixed and are difficult to float is effectively solved, the treatment capacity of the floatation system is improved, the floatation index of the floatation system is increased, production cost is reduced, the resource recovery rate is high, and economic benefits are good.

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 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 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.

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 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.

The invention discloses a positive flotation method for bauxite, and relates to an improvement on an ore dressing method for bauxite. The flotation method comprises the steps of ore grinding, grading and flotation. The method is characterized in that: original ore pulp obtained by grinding and grading the bauxite is sprayed into a scavenging foam collecting tank in the flotation process to wash away the scavenging foam, then the ore pulp is returned to a roughing stirring barrel through an ore pulp conveying pipe, and the ore pulp is acted with a flotation agent to perform the flotation process in the roughing stirring barrel. The method can remarkably improve the concentration of the ore pulp and further improve the treatment amount and flotation index of the whole flotation system, and has the advantages of simple process flow, low production cost, strong practicability and easy popularization.

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 relates to a flotation two-stage desiliconization method for high-silicon bauxite, which is a flotation desiliconization technology for bauxite and belongs to the technical field of mineral processing engineering. The method comprises the following steps of: coarsely grinding the bauxite into particles with certain fine granularity; under the condition of a certain ore pulp concentration, performing flotation first-stage desiliconization by using sodium carbonate as a pH regulator and a dispersing agent of the ore pulp, water glass and sodium hexametaphosphate as a combined inhibitor of gangue mineral, lead acetate as an activating agent of the bauxite, sodium oleate as a collector of the bauxite and pine oil as a foaming agent, wherein the base flow in a flotation groove is a section of silicon-containing tailings; allowing foam products to enter a grinding machine and grinding the foam products into particles with fine granularity; adding the medicaments sequentially and mixing pulp; performing flotation second-stage desiliconization, wherein the base flow in the flotation groove is a section of silicon-containing tailings; and selecting the foaming products for multiple times to form bauxite concentrate. The sectional desiliconization method for 'flotation first-stage desiliconization after coarse grinding and flotation second-stage desiliconization after regrinding rough concentrate' is utilized, so the influence of ore argillization phenomenon on desiliconization is greatly reduced, the flotation desiliconization effect on the high-silicon bauxite is obvious, the silicon dioxide content of the bauxite concentrate can be reduced greatly, the ratio of aluminum to silicon of the bauxite concentrate is increased, and the recovery rate is high.