SU1438840A1 - Method of flotation of potassium ores - Google Patents

Description

00

s

114

The invention relates to the enrichment of minerals by the method of flotation and can be used in potash processing plants. 1.YU.shch1x sylvinite ores and producing potash fertilizers.

The aim of the invention is to improve the extraction of potassium chloride and the quality of the concentrate in a wide range

temperature of the pulp.

In the method of potash ore flotation, which includes the sequential treatment of ore with a depressor and an emulsion mixture of higher aliphatic amines with foaming agents based on diethylene glycol ethers,

CH20N

CHg.

20

to

the source of dysglycol glycol esters is added to the bottom residue of ethyl carbitol production, wt%;

D1- etshgenglycol

Ztilkarbitol

T yellow products

compaction

Carbitole trade name. monoesters RO (), 20H and

0.5-2.0 5.0-10.0

up to 90

RO dischargers (CH2CH., 0) OR diethylene glycol. The bottoms production of ethyl carbitol is obtained during the production of ethyl carbitol from ethylene oxide through dystily glycol according to the technological scheme, the last stage

which can be represented as

one

CH.20C2H5

.f, "/ t & Sa

BUT

g

about

+

The bottom residue of ethyl carbitol production is high boiling water (t, “220С

Instrumentation

dark and measles liquid, well soluble in water and organic. solvent. The heavy compaction products are a mixture of the higher molecular weight glycol ethers, most likely tri-, tetra- and pentaethyleneglycols.

Example 1. A portion of sylvite ore is mixed with a saturated salt solution at a solid-liquid ratio: T: W in a laboratory flotation machine, after which a depressant agent is introduced in the form of a 1% aqueous solution of Na-KMU, agitating for 3 minutes An emulsion mixture of the collector (hydrochloric octade1 D1lamine and amines of Bereznikovskiy ATK with a ratio of 3: total flow rate of 60 g / t) is then supplied with a foam reagent - ethyl carbitol. The ore is conditioned for 1 minute and then floated.

The penny flotation product (concentrate) and chamber product (tailings) are separated from the brine in a Buchner funnel. The dehydrated flotation products are dried.

2 1

CH20N

CH

Weigh, grind, and determine the content of KC1 in the tails and concentrate by flame photometry and tetrapepylborate, respectively.

A concentrate is obtained which contains 1Y in the main flotation cycle of 85.4% KC1 with the extraction of the latter in a froth product of 95.6%, whereas by a known method at the same expenditure ratios, the recovery of KC1 in the concentrate is 94.3%, the content is 84.2 %

Example 2c The process is carried out as in Example 1 with the exception of the blowing agent consumption. A concentrate is obtained, containing 84.9% of KC1 when it is extracted from the ore, 96.1%, while according to a known method the content is 84.0%, the recovery is 95.4%.

Example 3. The process is started in example 1, but the temperature of the flotation pulp is 30 ° C. A foamy product is obtained with a KS1 content of 84.9% with its extract-EI of 95.3% of the ore, while by a known method we extract 93.8% of 1CC1,

Example 4. The process is carried out analogously to example 1, except that the flotation is carried out at a flotation slurry temperature of 35 ° C. A foam product is obtained with a content of 83.6% KC1 when it is extracted from the ore 93.9%, while it is known by a known method treatment of KC1 concentrate does not exceed 89.3%.

Thus, the application of the proposed method with the use of ethyl carbitol production as a blowing agent can increase the recovery of KC1 in the concentrate by 0.8-1.3%, as well as improve the selectivity of the flotation process. The concentration of potassium chloride in the concentrate, as compared with the known method, increases when flotadaida at 20 ° C is carried out by 0.9-1.2%. In addition, the use of the proposed flotation method makes it possible to significantly improve the qualitative and quantitative indicators of flotation at higher temperatures of the flotation pulp and thus achieve more stable flotation results as compared with the known method and baseline.

object in the summer period of time, when the temperature of the liquor processing plants reaches 25-35 C.

Claims (1)

Invention Formula Method f, potash ore lotations, inclusive sequential conditioning of the pulp with a depressor and an emulsion mixture of salts of higher aliphatic amines and hardeners based on distillyene glycol ethers, due to the fact that, with an increase in potassium chloride extraction and concentrate quality in a wide range pulp temperatures, as foaming agent based on DIE style NGLIC OLA esters in the EL LSION mixture are added to the bottom residue of the production of methylcarbitol of the following composition, wt%: Diethylene glycol 0.5-2.0 Ethylcarbitol 5.0-10.0 T yellow products Seals