SU1651972A1 - Method of coal flotation - Google Patents

Abstract

The invention relates to the enrichment of minerals and m. used The invention relates to the enrichment of minerals and can be used in coal preparation plants in coal flotation. The aim of the invention is to increase the recovery of the combustible mass into the concentrate due to the increased flotation activity of the collector. According to this method of coal flotation, which includes preliminary pulping, conditioning with coal flotation. The purpose of the invention is to increase the recovery of the combustible mass into the concentrate due to the increased flotation activity of the collector. The method of coal flotation involves the conditioning of the pulp with a collector, the introduction of a foaming agent and the release of combustible mass into the froth product. The method of coal flotation includes pulp conditioning, with a collector, the introduction of a foaming agent and the release of combustible mass in the froth product. A technical product of oil refining is introduced as a collector - catalyzing the reforming of heavy gasoline, wt.%: Aromatic hydrocarbons 49-57, naphthenic hydrocarbons 10-13, paraffin hydrocarbons 31-40. The use of the described method increases the extraction of the combustible mass into the concentrate by 2.6-3.6% (compared to Nefras A-150/330) with the same consumption of reagents. Improving the flotation activity of catalyzate. reforming of heavy gasoline is explained by the increased hydrophobic effect of the new collector reagent. A boater and an additional reagent and the release of combustible mass into the froth product, as a collector, introduce the technical product of oil refining - catalyze the reforming of heavy gasoline composition, wt.%: Aromatic hydrocarbons Naphthenic hydrocarbons Paraffin hydrocarbons 49-57 10-13 31-40 after that

Description

Aromatic hydrocarbons are presented,%:

3.2 ... 3.7 3.6 ... 7.0 39, .. 40.0 3.2, .. 6.3

C7On SvNyu

C9H12 SyuN14

Total;

Boiling point, ° С Bromine number Sulfur content,%

49.0 ... 57.0

110 ... 200 0.04 ... 0.05

0.00001

The technical product catalyzed reforming heavy gasoline is obtained as an intermediate product in the process of the joint production of aromatic (Nefras A-120/200) and aliphatic (Nefras C4-140 / 200) solvents.

The method is carried out as follows.

The initial charge of coal is mixed with water, conditioned with catalytic reforming of gasoline and a reagent & Chivatel - COBS.

To carry out the process, we take a portion of the coal, mix it with water in a laboratory machine of the type Mekhanobr. Then, in the process, a portion of the reagent catalyzed by the reforming of heavy gasoline is fed, and then bottoms of butyl alcohols.

The total consumption of the reagent mixture is determined by the flotation activity of the reagent mixture.

For the basic object (prototype) the method of coal flotation, including preliminary commissioning, conditioning of coal with the mixture Nefras A - 150/330 with COBS.

Coal fines flotation results show that the use of heavy petrol instead of Nefras A-150/330 and COBS as a catalyst collector of catalyzing rigs allows one to increase the extraction of bulk weight into concentrate from 81.8..86.4 to 85.4 ... 89.0%. The improved flotation of catalytic reforming of heavy gasoline compared with the use of Nefras A-150/330 is explained by the increased hydrophobization effect of the proposed collector reagent. The study of the collective properties of the reagents by flotation of coal in the Hallimond monobubble apparatus has established that the yield of the emerged product in the case of catalyzing reforming heavy gasoline is higher and with an equal concentration of reagents in water is 68 ... 75 vs. 59.0 ... 67.0% in the case of Ngfras A-150/330.

Thus, the use of the technical product of kata izata of reforming heavy gasoline as a collector reagent instead of Nefras A-150/330 allows increasing the extraction of combustible mass and concentrate by 2.6 ... 3.6% with the same consumption of reagents.

Claims (1)

Invention Formula The method of coal flotation, including pulp conditioning with collector, the introduction of the blowing agent and the release of the combustible mass into the froth product, about tl and h ayush and so that, in order to increase extraction of combustible mass in concentrate, in as a collector, catalysts are introduced to form heavy gasoline, obtained in the refining composition, wt.%: Aromatic hydrocarbons49-57 Naphthenic hydrocarbons10-13 Paraffin hydrocarbons31-40