The invention belongs to the field of complicated copper-lead-zinc sulphide ore beneficiation separation and provides a copper-lead separation flotation inhibitor and applications thereof The copper-lead separation flotation inhibitor is formed by mixing polymeric ferric sulfate solution with a mass concentration of 50%-60% and glycerin solution with a mass concentration of 08%-12%, wherein the mass ratio of the polymeric ferric sulfate solution to the glycerin solution is 1:1-4 Addition of the inhibitor in copper-lead separation operation can remarkably improve copper and lead concentrate qualities, evidently lower mutual containing of copper and lead, and improve flotation recovery rate of copper and lead minerals The copper-lead separation flotation inhibitor and the applications thereof have the advantages that the copper-lead separation flotation inhibitor is environment-friendly, efficient in sorting, low in reagent cost, easy to operate and the like and applicable to the complicated copper-lead-zinc sulphide ore beneficiation separation

Copper-lead separation flotation inhibitor and applications thereof

The invention relates to a beneficiation method of high calcium carbonate content type fluorite ore and belongs to the field of beneficiation. The beneficiation method comprises the steps of conducting flotation, wherein ore grinding is conducted on the high calcium carbonate content type fluorite ore until the fluorite ore with the granularity smaller than 74 microns accounts for 78%-92% firstly, secondly, sodium carbonate serving as a pulp regulator, acidized sodium silicate serving as a gangue inhibitor and sodium oleate serving as a catching agent are added in sequence, and then a fluorite rough concentrate is obtained; conducting concentration six times, wherein concentration is conducted on the fluorite rough concentrate obtained through the last step six times, acidized sodium silicate serving as a gangue inhibitor and tannin are added in sequence every time concentration is conducted from the third time to the sixth time, and a fluorite concentrate pulp is obtained after concentration is conducted six times; conducting acid leaching, wherein the fluorite concentrate pulp obtained from the last step is concentrated, hydrofluoric acid is added, the fluorite concentrate pulp and the hydrofluoric acid are evenly mixed, leaching is conducted, and a high-grade fluorite concentrate can be obtained after liquid-solid separation. By the adoption of the beneficiation method, the beneficiation effect is good and the recovery rate of fluorite is high.

Beneficiation method of high calcium carbonate content type fluorite ore

The invention discloses a method for recovering fluorite from polymetallic ore floatation tailings. The method comprises the following steps of adding HC1, a collecting agent and an inhibitor in the polymetallic ore floatation tailings, controlling ore pulp to be weakly acidic, and carrying out one roughing and one scavenging; and dividing a concentration process into two stages, wherein the first stage comprises the steps of adding the HC1 and the inhibitor in the obtained roughing foam, controlling the ore pulp to be weakly acidic, carrying out at least one concentration and enabling the obtained floatation foam to enter the second concentration stage, and the second stage comprises the steps of adding sodium carbonate solution and the inhibitor into the floatation foam entering the second concentration stage, controlling the ore pulp to be weakly basic, and carrying out at least one concentration, wherein the finally obtained floatation foam is the fluorite concentrate product. According to the method, the minerals such as the fluorite, calcite and iron-containing silicate have different optimum floatation separation pH ranges, and a concentration step-by-step inhibition process of acid first and alkali second is adopted, so that the effective separation of the fluorite and gangue minerals is realized.

Method for recovering fluorite from polymetallic ore floatation tailings

The invention discloses a grinding technology for processing copper-smelted slag and a system thereof; the technology comprises the following steps: delivering the copper-smelted slag to a grid ball mill for grinding, wherein, after the ore pulp flowing from the grid holes of the grid plate of the grid ball mill is screened and graded through a cylindrical screen, the coarse particle slag on the screen is spirally discharged from the grid ball mill and is returned to the grid ball mill for being re-grinded through a closed-circuit convey belt; screening fine particle slag to be integrated into a sand pump tank with the minerals discharged from the grid ball mill; delivering to a cyclone for grading through a sand pump; returning deposited sand of the cyclone into a ball mill for re-grinding; and delivering the overflow liquid of the cyclone into a second sand pump tank for performing secondary grinding. In the system configuration for implementing the grinding technology, the grid ball mill needs to be improved for becoming a mill; the stable closed-circuit grinding work in grades is realized, thereby relatively improving the effect by more than 50%, expanding the range of the grinded materials of the grid ball mill, and being capable of treating various types of copper-smelted slag such as converter slag, flash slag and accident slag.

Grinding technology for processing copper-smelted slag and system thereof

The invention discloses a fluorite floatation process, which comprises the following steps of (1) preparing a raw material: taking low-quality fluorite ores as the raw material, and taking linoleic acid, peanut oil and sodium dodecyl sulfate as a collecting agent, wherein the collecting agent is obtained by fully and uniformly mixing the linoleic acid, the peanut oil and the sodium dodecyl sulfate; (2) grinding the raw material into powder: grinding the low-quality fluorite ores to obtain powdery fluorite in an ore grinding machine, wherein the granularity of the powdery fluorite is 200 meshes; (3) performing floatation: adding water in an amount which is 4 times the weight of the powdery fluorite into the powdery fluorite to obtain slurry, sequentially adding sulfuric acid, water glass, hydrofluoric acid and the collecting agent, and performing floatation for three times to obtain floated fluorite, wherein based on the total weight of 100 tons of the slurry, 150 to 350 grams of sulfuric acid is added, 1,000 to 1,500 grams of water glass is added, 450 to 600 grams of hydrofluoric acid is added, and 500 to 750 grams of collecting agent is added.

Fluorite floatation process

The invention relates to a mineral separation process, in particular to a mineral separation process of complex fluorite difficult to separate. The process includes utilizing sodium hydroxide to treat oleic acid to obtain modified oleic acid, utilizing concentrated sulfuric acid to treat water glass and obtain acidized water glass, conducting ore grinding on fluorite ores according to the prior art, conducting coarse separation under the temperature of 25-30 DEG C, then conducting seven times fine separation on coarse separation foams and adding the acidized water glass into the foams in the first four times of fine separation to prepare fluorite concentrate. The process can improve separation efficiency of calcium fluoride, silica and calcite, improves quality and recycle rate of the fluorite ores, obtains high quality acid grade fluorite ores and resolves the problem of difficulty in separation of complex fluorite flotation, is remarkable in application effect in separation of the complex fluorite difficult to separate, has repeatability, simultaneously reduces requirements of fluorite mineral flotation for ore temperature, reduces energy consumption, reduces usage of collectingagent oleic acid, reduces environment pollution caused by exhaust of a large amount of waste water containing oleic acid and has better economical and social benefits.

Mineral separation process of complex fluorite difficult to separate

Multi-metal ore beneficiation technology

The utility model discloses an ore grinding system for treatment of copper smelting slag. A tubular screen is concentrically mounted in a hollow journal of an ore discharging outlet of a horizontal grid type ball mill, an ore discharging overflow box is disposed below the tubular screen and connected with a sand pump tank, the sand pump tank is connected with an inlet of a first swirler through a sand pump, a bottom outlet of the swirler is connected with an ore feeding inlet of the grid type ball mill, and accordingly an ore grinding closed loop is formed. A closed-loop conveying belt for conveying coarse particles on the tubular screen to the ore feeding inlet of the grid type ball mill is mounted on the grid type ball mill, and another ore grinding closed loop is formed. Overflow of the swirler is conveyed to a second sand pump tank. The grid type ball miller of the ore grinding system is modified, so that the grid type ball miller forms a sectional mill, stable closed-loop ore grinding graded operation is achieved, effect is increased by above 50%, equipment potential is fully released, production cost is reduced, material grinding range of the grid type ball mill is widened, and the ore grinding system is capable of realizing treatment of various copper smelting slags including converter slag, flash furnace slag, accidental slag and the like.

Ore grinding system for treatment of copper smelting slag

The invention relates to a method for preparing sulphurous acid by utilizing pyrite, which comprises the following steps of preparing materials, preparing a baker, roasting, dedusting, cooling, absorbing and storing, wherein the pyrite and coke are respectively placed after being weighed by weight ratio of 100:7-9; the prepared materials are added to the hearth of a preheated boiling furnace, wherein the coke is firstly added, and the pyrite is finally added; the temperature in the hearth of the boiling furnace is risen to 800 to 900 DEG C in 30 to 40 minutes, namely, sulfur dioxide dusty gasis continuously and stably prepared; and the sulfur dioxide dusty gas is fed to an absorption tower after dedusting and cooling the sulfur dioxide dusty gas, flows in the reverse direction with spraywater and is absorbed by water to prepare the sulphurous acid. The method of the invention has the advantages of wide sources of raw materials, high production efficiency, stable concentration, convenient operation, low cost, low S-containing grade requirements of the pyrite and the like.

Method for preparing sulphurous acid by utilizing pyrite

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