A Dry Separation Recovery System for Iron-Containing Useful Rock

Abstract

The invention discloses a dry separation recovery system for useful rock containing iron, which is composed of a material receiving part of the dry separation recovery system for useful rock containing iron and a dry separation part for dry separation recovery of useful rock containing iron: the main tape (4 ) and the former main adhesive tape (13) of the dump site are provided with a mobile trolley (15); a rock discharge chute (3) is vertically arranged at the rear end of the mobile trolley (15), and a vertically arranged front end of the mobile trolley (15) The dry separation chute (7); the iron-containing useful rock dry separation recovery dry separation part contains the aggregate type three-way distribution funnel and 2 dry magnetic separators; The flap is pushed by an electro-hydraulic push rod; the position of the mobile trolley (15) is adjusted by the double-drum winch (1), and different grades of iron-containing surrounding rocks are treated in different ways. The invention can adapt to different ore supply conditions, can automatically switch processing according to the iron grade in the iron-containing surrounding rock feed material, and can adapt to various ore supply conditions and changes in ore supply volume.

Description

technical field [0001] The invention belongs to the technical field of mineral processing. It specifically relates to a pre-selection system for low-grade, magnetite-containing surrounding rocks, especially suitable for ore-rock intersections in open pits, with a stripping capacity of more than 2000t / h, a total iron grade of 7-12%, and a magnetic iron grade of 2-6 The comprehensive utilization of magnetite-containing surrounding rocks can be widely used in the separation of iron-containing surrounding rocks in magnetite mines. Background technique [0002] At present, some iron mines in China have a certain amount of excavated rocks. Since the excavated rocks cannot reach the required grade of the concentrator, some iron-containing surrounding rocks are piled up in the dump without being utilized, resulting in a waste of a lot of resources. With the development of the domestic metallurgical industry, there is a large demand for mineral resources, and the mining capacity con...

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Problems solved by technology

[0004] The main ways of utilization are one is to directly use it as concrete aggregate or railway ballast, and the other is to use large dry magnetic separation to recover iron minerals. Although the above two ways of utilization partly use iron-containing surrounding rocks, it turns waste into "treasure", but there are problems of one kind or another, such as "directly used as concrete aggregate or railway ballast" technology does not comprehensively recover the iron ore resources in the surrounding rocks containing magnetite, resulting in a waste of iron ore resources ; while in the rock removal system "using dry magnetic separation to recover iron ore", it belongs to "recovering a little is a little", the dry separation concentrate yield is only about 5%, and a large amount of waste rock passes through the dry separation system, due to the cost of electricity and equipment depreciation The reason is that the overall recovery cost is relatively large

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