SU825159A1 - Method of fine manganese ore flotation - Google Patents

Description

(54) METHOD OF FLOTATION OF THIN-DISPERSED MANGANESE ORES

one

The invention relates to the enrichment, namely the flotation enrichment of fine manganese ore sludges.

Methods are known for the flotation of slimes of finely divided manganese oxide ores and low-grade products of gravity concentration with preliminary degassing. by size 20-10 microns 1.

However, when the content in the pulp fraction of 20 microns in an amount exceeding 8-10%, the quality and extraction of manganese drops significantly, the consumption of reagents increases. The loss of manganese in the desilting and thickening operations is.

There is a method of flotation of non-deslammed manganese ore pulps - Farenwold emulsion flotation., Including pre-conditioning of the ore in an alkaline medium with a collector. According to this method, after intensive agitation with reagents, the pulp is directed to flotation. Since the process is carried out without desliming, the consumption of reagents is high, kg / g. Salt oil62.0

Tall oil30,0

Oronit S3,8

Sulfur dioxide3,7

The reagents are supplied in the form of an emulsion. The use of oil reagents in combination with intensive movement promotes selective flocculation of fine manganese particles. Concentrate is extracted from ore containing about manganese with the content of 41.85% manganese with extraction of 78.7% 2.

The above method of flotation and undiluted ores for the isolation of high-quality manganese concentrate requires an unprecedentedly high consumption of reagents, electricity and special equipment to enhance the operation of moving with reagents.

The purpose of the invention is to increase the technological parameters of flotation: the content and extraction of manganese in high-grade concentrates by involving in the flotation process a fraction minus 0.04 mm.

Claims (2)

The goal is achieved by the fact that, after conditioning, the pulp is treated with monoethanolamide of fatty acids with the general formula RCONH-CjH OH, where R is a hydrocarbon radical with a carbon number from 10 to 16. Example. The object of laboratory research is a fraction of minus 0.04 mm of a mixture of sludges of manganese oxide ores, since the main difficulty of flotation is determined by the presence of finely dispersed material in the pulp of the order of the specified size. The yield of the fraction is almost half (44.2%) of all manganese oxide sludge from the beneficiation plants. The fraction of 0.04 mm is floated according to the scheme and on the reagent mode adopted for the granular fraction of flotation size in existing factories, with additional agitation of the pulp with monoethanolamide after the collecting mixture. The following is optimally accepted; reagent mode, kg / t: Soda ash 3 - 4 Crude tall oil soap6.0 Lighting kerosene 1.2-1.5 Sodium silicate 0.5 Monoethanolamide 0.8-1.0 As a result of the process, a manganese oxide concentrate with a content of 42, manganese with the extraction of 70.4% of the class minus 0.04 mm and 37.3% of the mixture of all sludge. According to the existing technology. With preliminary desalting with flotation of a poorer granular fraction containing 1.6.7% Mn, it is possible to isolate 8.3% of 2-grade manganese oxide concentrate, while extracting 18.9%. Thus, as a result of the proposed method, it is possible to involve in the enrichment process the non-floated fraction discharged to waste minus 0.04 mm; to extract from the fraction minus 0.04 mm in addition to the flotation size concentrate of 18.5% of 2 grade manganese oxide concentrate with a content of 42.5%; increase extraction in manganese concentrate of 2 grade by flotation of the fraction minus 0.04 mm by 37.3%. Thus, the proposed method improves the technological performance of manganese-containing ores flotation. Claims The method of flotation of finely dispersed manganese ores, including preconditioning of ore in an alkaline environment with a collector, is characterized in that, after conditioning, the pulp is treated with synthetic fatty acid monoethanolamide of the formula RCONH-CjiH OH, where R is a hydrocarbon radical with the number of carbon atoms from 10 to 16. Sources of information taken into account in the examination 1. Bogdanov O.S. and others. The state of development of enrichment of manganese ores Chiaturok the first and the Nikopol deposit. Ore dressing 1961, №4. 2. Farenwold A.W. Emulsion Rotation, Mining Congress 1. 1957, No. 8.