SU944665A1 - Method of desliming potassium containing ores - Google Patents

Description

(5) METHOD FOR COMBINATION OF POTASSIUM-CONTAINING ORES

The invention relates to the technology of processing and enrichment of water-soluble ores containing clay-carbonate helmets / for example, potash helmets. For the flotation beneficiation of such ores in order to ensure optimal flotation of the useful mineral (in the case of potassium ore, sylvina), preliminary desliming of the ore is also carried out by the flotation method using the following substances as polymers and copolymers based on acrylamide and lower acid acrylic as reagents yes: acrylic and methacrylic 1, organic acids, saturated and unsaturated, and their water-soluble salts 2. The closest to the invention to the technical essence and accessibility igaemomu result is a method obesshlam Livani potassium-containing ores comprising conditioning the ore with polyacrylamide and flotation of the clay-carbonate slurries SOC}. The main disadvantage of the method is the low technological parameters of the flotation process of potassium-containing ores. The purpose of the invention is to increase the recovery of sludge to the froth product. This goal is achieved by the fact that, according to the method of desliming potassium-containing ores, a water-soluble salt oi, P) -substituted derivatives of unsaturated acrylic acid is added to the conditioning. you (branched acrylic acid), of the formula RO-HC I ome R where R is a saturated or unsaturated hydrocarbon radical of normal or iso-structure

with the number of carbon atoms 2-3;

Rn - saturated or unsaturated hydrocarbon radical of normal or iso-construction with the number of carbon atoms

Me is an alkali metal cation or ammonium in an amount that provides its ratio with polyacrylamide by weight 7: 1 - 10: 1 .. 6 because of its branching, the sinks of substituted acrylic acid derivatives and their salts have an increased ability to flocculate clay-carbonate slimes, thus forming bridges of molecules adsorbed on the surface of particles, thereby increasing the floatability of the latter. Obviously, a more branched molecule is able to form bridges between a large number of particles, which leads to large floccules in the solution. Along with this, as shown by preliminary experiments, collectors have an increased foaming capacity. A sturdy and stable foam holds, in addition to those that have been splattered, also mechanically disposed sludge particles, increasing their extraction. The method is carried out as follows .. Ore is crushed, contacted with mother liquor, oC salt is introduced (3-substituted acrylic acid derivatives and polyacrylamide. Flotation of clay-carbonate sludge is carried out. Experiments were carried out with oL-isopropyl, (3-isobutylacetate {d - branched acid); the bottom residue produced by cL branched acidic acid, which is a mixture of higher branched acids C, C in a mass ratio of 6: 3: 1. Flotation conditions: the ore content in the suspension was 30% by weight; time of contact with collect l sludge - sodium soaps of oleic acid and branched acids of acrylic series - 30 s, with polyacrylamide - 15 s, with sludge modificatbrom (sodium salt of carboxymethylcellulose) - 2 min, with sylvine collector (mixture of pine octadecylamine and pine oil, respectively) 80 and 8 g per ton of ore) 30 pp. Sludge flotation time - 2 minutes, sylvinic flotation time - 2 minutes.

Claims (1)

A portion of the dry ore was contacted with the mother liquor for 10 minutes, then a branched acid salt of an acrylic series was added, and after 30 seconds polyacrylamide was added. The suspension was placed in the chamber of a laboratory flotation machine of type 137 FL and the flotation of the slurry product was performed. Then the modifier was added and, after agitating with it, a potassium chloride collector. After the main flotation, the products were weighed, dried and a chemical analysis was carried out, the potassium and the water-insoluble residue were determined. On the basis of tests, it has been established that the use of a known method does not provide the necessary flotation indicators, insignificantly improving both the recovery and the yield of insoluble wealth in the concentrate. The optimal ratio of branched acid soap: polyacrylamide is 7: 1-10: 1, respectively. Under these conditions, the yield of the slurry product reaches its maximum, the content of insoluble residue in the slurry product remains almost unchanged, the recovery increases by 15-20%, i.e. almost double compared to using one polyacrylamide. Thus, the main advantage of the invention is to increase the recovery of sludge from potassium-containing ores before their flotation enrichment. Claims method for desliming potassium-containing ores, including conditioning of ores with polyacrylamide and flotation of clay-carbonate sludges, characterized in that, in order to increase sludge recovery, an oL, p -substituent acrylic acid derivative of the formula R is introduced into the conditioning. Hc cc f ome RI where R is a saturated or unsaturated hydrocarbon radical of norR .1 Me 5. 9,666 minimum or izostroeni Sources of information with the number of carbon atoms taken into account in the examination of 2-3; saturated or unsaturated Copyright certificate of the USSR hydrocarbon radical of nor- 5. .. ,,,, - ,, „“ g., / “maximum or isostroenia, cl. At 03 D 1/02. WITH THE NUMBER OF CARBON ATOMS,. US Patent Vf 2652150, alkali metal cation. 209-166, published, 1953. or ammonium in an amount, 10 3. Zhelnin A. A. Reagents, used to ensure that potassium salts in flotation of it with polyacrylamide in the USSR and abroad are applied. M., NIITEKHIM, mass 7: 1-10: 1.1975, p. S (prototype).