SU1459720A1 - Method of flotation of graphite - Google Patents

Abstract

The invention relates to the enrichment of minerals and m. used in the flotation of graphite. The aim of the invention is to increase the recovery of carbon into concentrate by increasing the flotation activity of the collector. For this purpose, before supplying the blowing agent, a mixture of the mother liquor of pentaerythritol and the residual product of catalytic reforming of oil (nephras) at a ratio of 10: 1 to 15: 1 is introduced as an collector into the conditioning of the pulp. Consumption of a collective mixture of 300 g / t. The use of the mixture as a collector in the flotation of graphite makes it possible to increase the extraction of carbon in the concentrate from 91.1% to 92.6- 93.0% while reducing the flow rate of the collector by 2 times (L

Description

one

- The invention relates to the enrichment of useful minerals and can be used in the flotation of graphite.

The aim of the invention is to increase the recovery of carbon into concentrate by increasing the flotation activity of the collector.

The essence of the invention is that in the active flotation method, which includes preconditioning of the feedstock with a collector and a blowing agent, and. the following

separation, when conditioning, a mixture of pentaerythritol solution and residual product of catalytic reforming of oil (nefras) in a ratio of 10: 1 to 15: 1 is introduced as a collector.

The mother solution of pentazritrite is a waste resulting from the synthesis of pentaerythritol by condensation of acetaldehyde with formaldehyde in an aqueous solution. The main process proceeds according to the scheme ..

4 sd with

tsD

SNSN04.SNZ-SNO- (CH, HE) (CH, HE), UNS

trimethylol acetaldehyde

pentaerythritol.

 14

The condensation of adaldehyde d with formaldehyde also induces reactions that lead to the formation of dipentaerythritol () C-C-CH, i-0-CHi-C (), and Other high molecular weight products. ; The composition of the product, wt.%: Pentaeri-Grit 0.5-1.5; Dipentaerythritol 60-69 iodine 4-6; the high molecular weight product of ylicondensation is the rest.

The residual product of catalytic iformin a (nefras) is formed during the catalytic reforming of petroleum

fractions, the main purpose of which is 15 valuable component in the center of concentration below

The use of high-octane gas components from low-octane petroleum fractions.

i The composition of the product, wt.%:

1 Pseudocumene and others

; light hydrocarbons 6,1-8,2

yVDan 9bN CH2CH 9 g and inden C, 6- 3.8

10.0-11.4 12.9-15.1 11.4-14.0

4.1-5.9 20.5-22.5

Rest

Diethylbenzenes

Dimethyl diethylbenzenes

Tetramethylbenzenes

Co | 1d en syr anna

aromatic

hydrocarbons, including naphthalene,

A- and p-methylnaphthalenes

1,2,3-TpimetipbenzoJJ

High molecular weight

polycondensation products

Example. A portion of graphite ore is mixed with water, ground in a laboratory ball mill. The crushed ore is loaded into a laboratory machine of the type Mekhanobr, then the collector is served - a mixture of pentaerythritol mother liquor and residual catalytic oil reforming oil (nefras). contact of graphite ore. a blowing agent, for example T-80, is given with the reagent, followed by contacting. Then air is supplied to the flotation cell, and a flotagram is produced.

The use of a mixture of reagents mother liquor pentaerythritol and residual product of catalytic reforming of oil (nefras) in the ratio. 10: 1 - 15: 1 allows you to increase the extraction of carbon into concentrate from 91.10% to 92.6-93% while reducing the consumption of reagents by 2 times.

The use of a mixture of reagents mother liquor pentaerythritol and the product of catalytic reforming of oil (nefras) in a ratio of 5: 1 is impractical, as well as extraction.

optimal due to insufficient strength of fixing the reagent on the floating particles.

The use of a mixture of reagents in the acc.

wearing a 20: 1 does not lead to a further increase in carbon recovery in the concentrate due to the formation of an excess of polar groups on the surface of graphite and a decrease in the hydrophobicity of flotation particles.

Thus, in graphite flotation, the use of a mixture of pentaerythritol mother liquor and a product of catalytic reforming of oil (nefras) in a ratio of 10: 1–15: 1 instead of Ky6ioBoro of the residue of distillation of polyalkylbenzenes allows for an increase in carbon recovery from 91.1% to 92 6 - 93.0% with a decrease

collector consumption 2 times.

I

The use of the described reagent mixture allows reducing reagent costs by 1.48 - 1.67 times (from 0.884 cop / t to 0.598 - 0.528 cop / t).

Claims (1)

Invention Formula The method of graphite flotation, which includes preconditioning of the pulp with collector and blowing agent and food separator, is similar to the fact that, in order to increase carbon recovery in the carbon concentrate, a mixture of mother solution of pentaerythritol is introduced as collector and residual product of catalytic reforming of oil at a ratio of 10: 1 - 15: 1.