SU1331569A1 - Method of flotation of coal and graphite - Google Patents

Abstract

The invention relates to the enrichment of minerals and allows an increase in technological performance while simultaneously reducing the cost of the flotation process. The original cell was preconditioned with a collector and a blowing agent, and then flotation was carried out. As a collector, the bottoms residue of the distillation of the caprolactam composition is introduced, wt.%: Caprolacts 9-20; sodium salt of aminocaproic acid 23-47; caprolactam oligomers 22-43; resins 13-19; 1-3 NaOH free. Kubovy residue is obtained in the process of production of caprolactam through cyclohexanone. Kubov residue is sent for incineration. with (L with iDd ate 05 SB

Description

The invention relates to the enrichment of minerals and can be used in coal flotation and graphia.

The aim of the invention is to improve the technological performance with

sn,

  ", CV H /

CHj.

Chu

Phenol

simultaneous flotation rate due to collector

The bottoms of lactam receive caprolactam

according to the following scheme

sn,

fV, 0 N ,,

 GN /

Cyclohexanol Cyclohexanone

Beckman regroup

in the environment of oleum

Oxime cyclohexanone

The rearranged product — technical caprolactam — is subjected to saponification with water, followed by neutralization of sulfuric acid with ammonia. The resulting product is divided into caprolactam syrup and am-sulfate solution. moni Caprolactam is subjected to extraction with trichlorethylene in order to release the product from water-soluble impurities. The resulting solution of caprolactam is subjected to re-extraction with water, followed by packing and six-step vacuum cleaning of an aqueous solution of caprolactam.

Vacuum purification yields commercial caprolactam and a bottoms residue, which is subjected to periodic distillation. The residual caprolactam is returned to the evaporation stage, and the distillation residue is sent for incineration.

The composition of the product, wt.%:

Caprolactam 9-20

Sodium salt

aminocaproic

acids -23-47

Caprolactam 22-43 oligomers

Resins 13-19

Available NaOH 1-3

at the same time reducing the cost of the flotation process due to the increased flotation activity of the collector.

The bottoms of caprolactam distillation are obtained during the production of caprolactam through cyclohexanone.

according to the following scheme:

sn,

fV, 0 he / g N, ZOCH N ,,

 GN /

mon, n, sn,

 with about

HjC-NH

Caprolactam

Example 1. Flotation ang.

To carry out the process of photoelectric treatment, we take a sample of coal, for example, O, 1 kg, mix with water for 3 minutes, then serve the collector - the bottoms residue of the distillation of caprolactam. After contact of the carbon sample with the reagent, a blowing agent, for example, T-80, is supplied for 5 minutes, followed by 1 minute contacting.

Example 2. Flotation of graphite ore.

A portion of graphite ore 0.4 kg mixed with water, crushed in a laboratory ball mill for 15 minutes. The crushed ore is loaded into a laboratory machine, then the collector is fed - the bottoms residue of the distillation of caprolactam. After contacting the sample of graphite ore with the reagent, a blowing agent, for example T-80, is supplied for 3 minutes, followed by contacting for 1 minute.

Analysis of the results shows that the best indicators are obtained when applying the VAT residue.

caprolactam distillation.

Formula-invention

The method of flotation of coal and graphite, including 1st preliminary condition31331569

Testing raw materials from collecting-caprolactam 9–20 by the body and blowing agent, I distinguish the Sodium salt from the fact that, for the purpose of higher-aminocaproic NIN, technological indicators of acidity 23–47, at the same time cheaper process 22-43 dt vat residue from the distillation of the Cap-Smoly13-19 rolactam composition, wt.%: Available NaON 1-3

Claims (1)

Claim The method of flotation of coal and graphite, including preliminary conditioning of the feedstock with a collector and a blowing agent, characterized in that, in order to increase technological parameters while reducing the cost of the flotation process, the distillation residue of caprolactam composition, wt.%, Is introduced as a collector: Caprolactam 9-20 Sodium salt aminocaproic Ε- acid 23-47 υ Oligomers cap rolactam 22-43 Resins 13-19 Free NaOH 1-3