SU633603A1

SU633603A1 - Method of wet disintegration of minerals in drum mill

Info

Publication number: SU633603A1
Application number: SU772507926A
Authority: SU
Inventors: Самуил Иосифович Горловский; Валерий Викторович Захваткин
Priority date: 1977-07-06
Filing date: 1977-07-06
Publication date: 1978-11-25

Description

II

Изобретение относитс к способам мокрого измельчени полезных ископаемых и может быть применено в горнорудной , химической и других отрасл х , промьпцленности.The invention relates to methods for the wet grinding of minerals and can be applied in the mining, chemical and other areas of industrial importance.

Известен способ мокрого измельчени материалов с использованием мелющих тел и воды, по которому с целью уменьшени степени переизмельчени ценных материалов и улучшени технологических показателей последующего процесса обогащени , в мельницу ввод т воздух 11.There is a known method of wet grinding of materials using grinding bodies and water, according to which air is introduced into the mill in order to reduce the degree of overgrinding of valuable materials and improve the technological indicators of the subsequent enrichment process.

Недостатком такого способа вл етс его мала эффективность.The disadvantage of this method is its low efficiency.

Наиболее близким техническим решением к изобретению вл етс способ мокрого измельчени полезных ископаемых в барабанной мельнице в присутствии поверхностно-активных вешеств при непрерывной загрузке в нее полезных ископаемых и воды и непрерывной выгрузке из нее водной суспензии измельченного материала с последующим обогащением 21The closest technical solution to the invention is a method of wet grinding of minerals in a drum mill in the presence of surface-active substances with continuous loading of minerals and water into it and continuous discharging of an aqueous suspension of ground material from it, followed by enrichment. 21

Недостатком этого способа вл етс недостаточна эффективность процесса обогащени .The disadvantage of this method is the lack of efficiency of the enrichment process.

Цель изофетени - повышение эффективности процесса обогащени .The goal of isophenenia is to increase the efficiency of the enrichment process.

Это достигаетс тем, что в способеThis is achieved in that in the method

мокрого измельчени полезных ископаемых в барабанной мельнице в присутствии поверхностно-активных веществ при непрерывной загрузке в нее полезныхwet grinding of minerals in a drum mill in the presence of surfactants with continuous loading of minerals into it

-ископаемых и воды и непрерывной вы грузке из нее водной суспензии измельченного материала с последук цим обогащением , в воде, перед подачей ее в мельницу , раствор ют газы под давлением- fossil and water and continuous unloading from it of an aqueous suspension of crushed material with the subsequent enrichment, in water, before feeding it into the mill, gases under pressure are dissolved

3-10О атм, а образующуюс в мельнице пену непрерывно вывод т.3-10 atm, and the foam formed in the mill is continuously withdrawn.

Пример. Серную руду крупностью 2-О мм подают в шаровую мельницу,- в которую одновременно подают воду, вExample. Sulfuric ore of 2 mm size is fed to a ball mill, into which water is simultaneously supplied,

Claims

which is distributed as VO.g / m "frother LGI-1 and which is at the moment at a pressure of 1OO atm. by air. The ratio of ore: water is 1: O, 9. Formed during the release of air, the foam jpbiBHD is removed (together with the solid parts present in it) from the mill and poured onto the first cleaning of the rough concentrate. Grinding is carried out to a particle size of 75-8 O% of class O, O74 mm. Drainage of the mill goes to the main flotation (when loading the collector of IM-5 - 0.35 kg / g, liquid glass - 0.5 kg / and LGI-1 - 20 g / g), and then three times cleaned together with the foam product, coming from the mill. An increase in the efficiency of the process of enrichment is achieved due to the fact that with a pressure drop, water-soluble gases are released from it, forming foam on the surface of the pulp being crushed and the ore particles (mostly hydrophobic) that fall into it do not undergo crushing. Claims 1. Method of wet grinding of minerals in a drum mill in the presence of surfactants with continuous loading of minerals and water into it and continuous unloading of an aqueous suspension of crushed material from it, followed by enrichment, characterized in that; In order to increase the efficiency of the enrichment process, gases under pressure atm are dissolved in water, before being fed into the mill, and foam formed in the mill is continuously removed. 2. The way pop. 1, which is distinguished by the fact that the foamy and aqueous solids are removed from the mill and are fed for enrichment separately. Sources of information taken into account in the examination: 1, USSR Copyright Certificate N 446307, cl. In O2 C 19 / OO, 1973.

2. Mitrofanov S.I. Selective flotation, M., Nedra, 1967, p. 330.