SU768490A1 - Asbestos ore enriching method - Google Patents

Description

one

The present invention relates to the field of asbestos ore beneficiation.

A known method of enrichment of rough asbestos concentrate, including the operation of classification into narrow size classes 5.

The disadvantages of this method are the low quality of asbestos.

The closest technical solution known is the method of enriching asbestos ores, which consists in separating valuable components from the host rock on an inclined plane after preliminary classification of the initial ore into narrow size classes {2.js

The disadvantage of this method is the low degree of extraction, the considerable labor intensity of the process and the low specific productivity of the installations used.

The aim of the invention is to improve the quality of separation 20.

This goal is achieved due to the fact that each more small formation is supplied to the vibroplane to a point located in the direction of movement of the outfall from the vibrating plane of the host rock at a distance multiple of the NARROW classes along the width of the vibroplane.

In Fig.-1 diagram of the device; in fig. 2 - the same, top view .30

The device consists of a bunker 1 with the source material (on the bunker there is a gate valve for controlling the supply of the source material), screen 2 with waste collection (class minus 0.5 mm) and grids, for example, cells 3c 1.6 mm, cells 4 (class minus 0.8 - plus 0.5); cells 5 (class minus 1.6 - plus 0.8 mm), vibroplane decks 6 with directional flows of concentrates 7, 8 and 9. The vibrating plane slopes upward in the direction of movement of the concentrate along arrow A, and in the direction of arrow B - downwards.

The source material comes from the hopper 1 through a gate funnel at screen 2, where it is classified, for example, into three narrow classes on grids with cell sizes of 1.6 mm, 0.8 mm and 0.5 mm. The class minus 0.5 mm is waste and immediately through the hopper 10 is withdrawn from the process (along arrow C in the figure).

Claims (2)

Classes plus 1.6 mm minus 1.6, plus 0.8 mm and minus 0.8 mm, plus 0.5 mm are fed to the vibroplane and form three concentrate flows (7, 8 and 9 respectively) in the direction of arrow A, and gathering streams of the host rock in the direction of arrow B. Moreover, the smaller the material, i.e., below it is located the point of its supply to the vibroplane in the direction of the descent from -. . .,. “Ф, 3, 4jh vibroplanes of the enclosing rock (along arrow B). Such a supply of a narrowly classified material on a vibroplane will allow larger grains of the host rock, moving under the slope to the outgoing, to intersect the flow of concentrate of smaller classes. In this case, the larger particles do not shift with the flows of concentrates more than small classes, but roll over them freely. This is due to the fact that large particles have a large radius and a large mass, due to which the tilting moment acting on large particles rolling under the slope exceeds the moment of resistance from the flow of concentrates of smaller classes. The described method of feeding narrow classes of enriched material onto a vibroplane allows organizing on it the number of flows equal to the number of classes without increasing the area of the plane, i.e., for small classes, the movement path of concentrates is bent. Due to this, the formed fan practically does not widen in the direction of going out of the plane and allows to increase the productivity of the vibroplane without increasing its area, and hence increase the specific load on the vibroplane. The technical and economic efficiency of the proposed method consists in a significant increase in the specific productivity of the vibroplane and in an increase in the quality of the fibrous concentrates separated on it. Claims The method of enrichment of asbestos ores, which consists in separating valuable components from the host rock on an inclined plane after preliminary classification of the initial ore into narrow size classes, characterized in that in order to improve the quality of separation, each smaller class is fed to the vibroplane located in the direction of the descent from the vibrating plane of the host rock at a distance multiple of the number of narrow classes in the width of the vibroplane. Sources of information taken into account during the examination 1. USSR author's certificate No. 629980, cl. At 07B 9/00 12/29/76. 2. Shchedrinsky MB “Enrichment of Asbestos Ores, M. Gosgorte Hizdat, 1962, p. 42-43 (prototype). Fig-2