45results about How to "Simplify the flotation process" patented technology

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.

The invention discloses a production process for ultrapure iron concentrate powder. The production process comprises the following process steps of: (1) performing (-)200-mesh screening on ore pulp to obtain undersized products; (2) magnetically separating the undersized products to obtain magnetically separated concentrate and tailings; (3) washing the magnetically separated concentrate to obtain ultrafine ores and tailings; and (4) dehydrating and drying the ultrafine ores to obtain ultrapure iron concentrate powder. According to the production process disclosed by the invention, production of ultrapure iron concentrate powder is realized through simple magnetic separation, so that a common flotation process is reduced; magnetic separation requires grinding fineness which is lower than that of flotation, a floatation process requires heating ore pulp and adding a plurality of reagents, and a magnetic separation process is relatively simple, so that ore grinding cost and grading cost are lower; and the flotation process is not easily controlled, used reagents have great influences on environment, and the magnetic separation process is simple and is free of influences on environment. The production process is simple in implementation process, is lower in investment, is simple in process, and is free of pollution; and the produced ultrapure iron concentrate powder is high in grade and is low in cost.

The invention relates to a direct flotation method of zinc sulfide ore. The method includes the steps of grinding the zinc sulfide ore to form ore pulp, adjusting the PH value of the ore pulp to reach 6-11, adding N-alkyl dithiocarbamic acid sodium as a collecting agent and terpenic oil as a foaming agent into the ore pulp, adding zero or little copper sulfate as an activating agent and carrying out flotation. According to the method, copper activation-free direct flotation of the zinc sulfide ore can be realized, the use amount of copper sulfate can be remarkably lowered, and subsequent flotation separation of zinc sulfide and other metal sulfide ore can be promoted.

The invention discloses a dressing and smelting combination method for copper-zinc sulfide ores difficult to treat and belongs to the field of dressing and smelting. The dressing and smelting combination method for the copper-zinc sulfide ores is used for solving the problems that flotation separation of the copper-zinc sulfide ores is difficult, the traditional dressing and smelting process is long, and the treatment cost is high. Firstly, the copper-zinc sulfide ores are treated through the processes of ore crushing, ore grinding and mixing flotation, and thus mixed flotation concentrates are obtained; then, roasted zinc is obtained after drying and oxidation roasting, coke and slag forming constituents are added for reduction smelting, thus a zinc product, smelted upper-layer slag and smelted bottom slag are obtained, the upper-layer slag is directly used for being sold or used as paving stone, and copper in the bottom slag is enriched preliminarily; and finally, the bottom slag issubjected to selective oxidation smelting at the temperature of 1350-1550 DEG C, thus a primary copper product and ferrous oxide slag are obtained, and the ferrous oxide slag is directly used for ironsmelting or dye manufacturing. The dressing and smelting combination method provides a new method for clean utilization of the copper-zinc sulfide ores difficult to treat, the total recycling rate ofcopper is 80%-90%, and the total recycling rate of zinc is 82%-92%, and the method is short in process, environmentally friendly, and good in industrializing application prospect.

The invention discloses a method for recovering indium-enriched marmatite from copper, zinc and indium coexisting polymetallic ore under a low-alkaline condition. By adoption of the method, the technical problems that under the high-alkaline condition, indium-enriched marmatite is poor in floatability, difficult in excitation and low in indium recovery rate, and concentrate metals are high in content are solved. The method comprises the steps that a chemical agent is added into crushed and ground raw ore, slurry is formed through blending, and then copper, zinc and sulfur iso-flotation is conducted; and coarse grains are reground after iso-flotation rough concentrate is graded, an inhibitor is added for adjusting the mineral slurry and the pH value of the slurry, then copper selection is conducted, and copper concentrate and copper cleaner tailings are obtained; the copper cleaner tailings and copper, zinc and sulfur iso-flotation tailings are blended, then an activator is added and blended with the slurry, zinc and sulfur bulk flotation is conducted, and coarse grains are reground after zinc and sulfur bulk flotation rough concentrate is graded; and lime is added for adjusting the pH value of the mineral slurry, then zinc selection is conducted, and zinc concentrate and zinc cleaner tailings are obtained. By adoption of the method, the use amount of the inhibitor in the copper and zinc grading operation, the flotation mineral flurry pH value and the concentrate metal contents are lowered, and the indium and zinc recovery rates are increased; and meanwhile, the flotation process is simplified, and the flotation efficiency is improved.

The invention provides a low-order coal slurry flotation collecting agent compounded with acid aldehyde ether and a preparing method and application of the low-order coal slurry flotation collecting agent. The collecting agent comprises following components including, by mass percent, 60%-85% of C10-C16 hydrocarbon oil, 5%-15% of C6-C8 acid, 5%-15% of C5-C9 aldehyde and 5%-15% of C4-C10 ether. According to the provided low-order coal slurry flotation collecting agent compounded with the acid aldehyde ether, the collecting agent has the characteristics that components are simple, the collectingagent can serve as the low-order coal slurry flotation collecting agent to finish economical and efficient sorting of conventional flotation, reagent consumption is low, the flotation cost is low, and the sorting efficiency is high.

The invention belongs to the technical field of preparing low grade hematite ore, in particular to a process for processing a low grade hematite ore. The process comprises the following steps: the ore is ground until monomer separation and then coarse and fine classification is carried out on pulp; coarse grain pulp is subject to reselecting, ferromagnetism and sieving to obtain a part of the concentrate; the fine grain pulp is conveyed to a mixing tank for separating sample, and then is conveyed to a second mixing tank to be mixed with medicine for size mixing; the mixture is pumped to a rough flotation column; the under flows of the rough flotation column is fed to a cleaning flotation column, the under flow of the cleaning flotation column is the ultimate iron ore concentrate; foam of the rough flotation column is conveyed to an one-stage scavenging flotation column by a pump; the under flow of the one-stage scavenging flotation column and the foam of the cleaning flotation column are mixed and return to the rough flotation column, and products of the one-stage scavenging flotation column are final tailings. The process has the beneficial effects of smaller occupation area by replacing a flotation machine with the flotation column, can recycle fine-grade valuable mineral effectively, improve the ultimate concentrate grade, provides reference significance for the mineral separation of the ore of the same type in China, and has obvious economic benefits and social benefits.

The invention provides a low-order coal slime flotation collector compounded with ester aldehyde ether and its preparation method and application. The collector has simple composition and can be used as a low-rank coal slime flotation collector to complete conventional The economical and efficient separation of flotation has the characteristics of small chemical consumption, low flotation cost and high separation efficiency. The low-rank coal slime flotation collector of compound ester aldehyde ether provided by the invention comprises each component of following mass percent: C 10 -C 16 Hydrocarbon oil 60‑85%; C 10 -C 18 Esters 5‑15%; C 5 -C 9 Aldehyde 5‑15%; C 4 -C 10 Ether 5‑15%.

The invention provides a low-rank coal slime flotation collector compounded with acid ketone ether and a preparation method thereof. In terms of mass percentage, the collector includes: C 10 -C 16 Hydrocarbon oil 60‑85%; C 6 -C 8 Acid 5‑15%; C 5 -C 10 Ketone 5‑15%; C 4 -C 10 Ether 5‑15%. The collector provided by the invention has simple components, can be obtained by compounding a small amount of reagents, and can be used in conventional low-rank coal slime flotation technology, with small reagent consumption, low flotation cost, and high separation efficiency. Significant economic benefits.

The invention belongs to the field of sulphide ore flotation, and particularly discloses application of a 2-alkyl amino substituted carboxylic acid compound as an inhibitor of iron-containing sulphideore. The invention further provides a sulphide ore floating agent containing the 2-alkyl amino substituted carboxylic acid compound. It is found that the 2-alkyl amino substituted carboxylic acid compound can selectively inhibit the iron-containing sulphide ore in flotation of the sulphide ore such as ferromolybdenum, galvanized iron, leaded iron, copper containing iron and bismuth containing iron, the flotation technological process can be simplified, the agent dosage is reduced, environmental pollution is reduced, and the production cost is reduced.

The present invention relates to the field of metallurgy technology, and discloses a complex polymetallic sulfide ore copper-lead-zinc-arsenic flotation separation method, including the following steps: Step S1: ore grinding operation: crushing the raw ore and putting it into a ball mill with water Grinding and discharging conditions of the ball mill are that the grinding fineness reaches ‑0.074mm, accounting for 65-70%; Step S2: Copper, lead, zinc and arsenic mixed flotation operation: add dilute sulfuric acid to the flotation machine to adjust the pH value of the pulp to the weakest Alkaline, with butyl xanthate as collector and terpineol oil as foaming agent, and after stirring separately during the addition process, one roughing, three times of refining and two sweeping are carried out to obtain copper, lead, zinc and arsenic mixed concentrate mines and tailings. The medicament used in the design of the present invention is a conventional mineral dressing medicament, which has no pollution to the environment, is cheap, is easy to buy in the market, and is convenient for cost control. The intermetallic content in the product is low.

The present invention relates to a sub-type magnesium sulfate subtype salt lake brine natural evaporation staged ore-forming process, comprising the following steps: (1) pumping brine from a magnesium sulfate subtype salt lake well into a sodium salt pool, naturally evaporating to precipitate sodium chloride, and then When the sharp salt is close to saturation, it is introduced into the adjustment pool, and when the brine point reaches the epsom salt and is about to be precipitated, it is imported into the potassium mixed salt pool; (2) in the potassium mixed salt pool, the brine obtained in step (1) continues to be evaporated naturally, and when the brine is close to light brine The stone is saturated and will be imported into the carnallite pool when it is about to be separated out, and the potassium mixed salt ore is separated out, and the potassium mixed salt ore is separated out, and the potassium mixed salt ore enters the potassium magnesium sulfate fertilizer workshop to produce langbeinite products; (3) in the carnallite In the pool, the brine obtained in step (2) continues to be evaporated naturally, and when the brine reaches the old brine point, it is introduced into the old brine storage tank, and carnallite ore is precipitated, and the carnallite ore enters the potassium chloride workshop to produce potassium chloride products . The invention has the advantages of simple process, low production cost and high sulfur-potassium ratio of potassium mixed salt ore.

The invention relates to a micro-fine particle red magnetic mixed iron ore sorting process characterized by including stage grinding-classification-weak magnetic operation-strong magnetic operation-anionic reverse flotation operation, the anionic reverse flotation is performed by use of a one-coarse, one-fine and large circulation mine returning three-scavenging system. According to the micro-fine particle red magnetic mixed iron ore sorting process, first stage ball-milling is performed, then weak magnetic-strong magnetic separation is performed, excess-grinding is effectively prevented, the effect of the magnetic separation can be ensured; after secondary stage ball-milling, anionic reverse flotation operation is directly performed, the advantage of good micro-fine particle iron ore sorting effect of reverse flotation is full used, by use of the technological process, iron concentrate with the iron grade of 65% and the iron recovery rate of more than 73% can be obtained, the final sorting indicators can be further optimized, and the high recovery rate of the iron concentrate can be ensured.

The invention provides a low-order coal slime flotation collector compounded with ketone aldehyde ether and its preparation method and application. The collector has simple composition and can be used as a low-rank coal slime flotation collector to complete conventional The economical and efficient sorting of flotation has the characteristics of small chemical consumption, low flotation cost and high sorting efficiency. The low-rank coal slime flotation collector of compound ketone aldehyde ether provided by the invention comprises each component of following mass percentage: C 10 -C 16 Hydrocarbon oil 60‑85%; C 5 -C 10 Ketone 5‑15%; C 5 -C 9 Aldehyde 5‑15%; C 4 -C 10 Ether 5‑15%.