CN1281326C

CN1281326C - Nickel sulfide, copper tailings comprehensive recovery technology

Info

Publication number: CN1281326C
Application number: CNB2005100165700A
Authority: CN
Inventors: 徐广平; 赵海; 王升雨; 王玉文; 刘玉江; 高锁山; 耿隽嵩; 国兴彬
Original assignee: JILIN JIEN NICKEL INDUSTRY Co Ltd
Current assignee: JILIN JIEN NICKEL INDUSTRY Co Ltd
Priority date: 2005-02-04
Filing date: 2005-02-04
Publication date: 2006-10-25
Anticipated expiration: 2025-02-04
Also published as: AU2005203753B2; AU2005203753A1; CN1651148A

Abstract

The present invention relates to a nickel sulfide and copper mine tailing comprehensive recovery technology. The technology is characterized in that the technology orderly comprises a mine tailing sand water sampling process step, a reelection ore concentrate dewatering process step, an ore grinding process step and a magnetic separation process step. In the mine tailing sand water sampling process step, mine tailing sand is manufactured into mine tailing pulp with the concentration of 20 to 30%, and in the reelected ore concentrate recovered through a mine tailing reelecting process step in a three-section separation way, nickel is more than or equal to 1.5%, and copper is more than or equal to 0.4%. In the reelection ore concentrate dewatering process step and the ore grinding process step, the ore grinding fineness is from 75% to 85% for 200 meshes, and ore dressing medicine composed of collecting agents, oxidized mineral activating agents, foaming agents, modifying agents and inhibiting agents are added in the ground pulp. In a final product recovered by a flotation process step composed of flotation roughing, flotation concentrating, scavenging I and scavenging II, nickel is from 5% to 7%, and copper is from 1% to 1.5%. In the magnetic separation process step, in recovered mine tailings, iron is more than or equal to 45%, and sulfur is more than or equal to 28%. The present invention has the advantages of advanced technology, no secondary pollution in the process of production, high production efficiency, low cost, high comprehensive recovery rate for valuable metal in the mine tailings, etc.

Description

Nickel sulfide, copper tailings comprehensive recovery technology

Technical field

The present invention relates to sorting solid material field, is a kind of nickel sulfide, copper tailings comprehensive recovery technology.

Background technology

About 10,000 ten thousand tons of whole world nickel gross reserves, nickel sulfide, copper mine stone accounts for about 2,500 ten thousand tons of 1/4th amounts of metal of world's nickel reserves, all the other are nickel ore, but in nickel sulfide ores, extract nickel and account for 2/3rds of nickel total output, as bargh, natural resource utilizing enterprise particularly, development and use process in resource, because being subjected to existing technology and ore character limits, at nickel sulfide, copper mine stone produces a large amount of containing metal resource tailings impoundments in ore dressing become waste resource in the middle of the mine tailing storehouse, and effectively reclaimed always and utilize, cause the waste of a large amount of valuable resources.In nickel sulfide, copper mine stone, except that nickeliferous, copper, also with metallic element in many, as rare metals such as cobalt, platinum, palladium, gold, silver, these metals also are rich in the middle of the ore crystallization with nickel, copper simultaneously, quite a few enters in the middle of the mine tailing with nickel, copper in ore dressing process, and the whole world produces the nickel, copper mine tailing of accumulation at present up to nearly 2,000,000,000 tons, nearly 5,000,000 tons of only nickeliferous amount of metal.Still find no at present the document record that nickel sulfide, copper tailings comprehensive recovery technology comprehensively reclaim nickel sulfide, copper mine tailing.

Summary of the invention

Technical problem to be solved by this invention provides a kind of technology advanced person, the production process non-secondary pollution, and the production efficiency height, cost is low, the nickel sulfide that the valuable metal comprehensive recovery is high in the mine tailing, copper tailings comprehensive recovery technology.

The technical scheme that solves its technical problem employing is:

A kind of nickel sulfide, copper tailings comprehensive recovery technology are characterized in comprising successively following steps:

(a) CHARACTERISTICS OF TAILINGS SAND hydromining operation 1 is made the mine tailing ore pulp of 20～30% concentration with CHARACTERISTICS OF TAILINGS SAND, more described mine tailing ore pulp is delivered to mine tailing gravity separation technology 2;

(b) mine tailing gravity separation technology 2 sorts by three sections and forms, first section product that sorts enters second section and sorts, first section mine tailing and second section chats that sorts after sorting all enters magnetic separation operation 6, second section product that sorts enters the 3rd section and sorts, the 3rd section product after sorting enters 3, the three sections chats that sort of dehydration procedure and returns second section and sort, and mine tailing gravity separation technology 2 is through three sections gravity concentrates that sort recovery, its nickel 〉=1.5%, copper 〉=0.4%;

(c) the gravity concentrate dehydration procedure 3, and mine tailing gravity separation technology 2 is dewatered through three sections gravity concentrates that sort recovery;

(d) Grinding procedure 4, and the gravity concentrate after the dehydration is carried out ore grinding, its granularity-200 order 75～85%;

(e) flotation operation 5 is by roughing flotation, flotation is selected, scan one, scan two compositions, add in the ore pulp behind ore grinding by collecting agent, the oxide mineral activator, foaming agent, adjust agent, the dressing agent that inhibitor is formed, ore pulp enters roughing flotation, roughly selecting product, to enter flotation selected, chats after flotation is selected enters roughing flotation, mine tailing after roughly selecting enters successively and scans one, scan two, scan one product and return roughing flotation, scanning two product returns and scans one, mine tailing after scanning is newborn mine tailing, through the selected product of flotation, its nickel 5～7%, copper 1～1.5%.

(f) the magnetic separation operation 6, and it is selected that the gravity tailings after gravity treatment operation 2 is reclaimed carries out magnetic separation, reclaims the iron sulfur metal in the mine tailing, its iron 〉=45%, and sulphur 〉=28%, the magnetic tailing after magnetic separation is selected is newborn mine tailing.

The collecting agent of the dressing agent described in the flotation operation 5 is a butyl xanthate, total consumption is 150 gram/tons, the oxide mineral activator is a copper sulphate, and total consumption is 250 gram/tons, and foaming agent is composite drug C125, total consumption is 350 gram/tons, the adjustment agent is a sodium sulphate, and total consumption is 800 gram/tons, and inhibitor is a carboxymethyl cellulose, total consumption is 600 gram/tons, and its compound concentration is 10%.

Nickel sulfide of the present invention, copper tailings comprehensive recovery technology have the technology advanced person, the production process non-secondary pollution, and the production efficiency height, cost is low, valuable metal comprehensive recovery advantages of higher in the mine tailing.

Description of drawings

Fig. 1 is nickel sulfide, copper tailings comprehensive recovery technology flow chart.

The specific embodiment

Utilize drawings and Examples that the present invention is further described below.

With reference to Fig. 1, nickel sulfide, copper tailings comprehensive recovery technology comprise following steps successively:

CHARACTERISTICS OF TAILINGS SAND hydromining operation 1 is made the mine tailing ore pulp of 20～30% concentration with CHARACTERISTICS OF TAILINGS SAND with water under high pressure, adopts the ore deposit pump to be delivered to mine tailing gravity separation technology 2 the mine tailing ore pulp again.

Gravity treatment operation 2 is to utilize the difference in specific gravity of mineral and grade poor, adopts special-purpose gravitational separation equipments such as gravity separation spiral chute and jigging, fully effectively extraction valuable mineral and valuable metal mine tailing.Gravity separation technology 2 sorts by three sections to be formed.First section product that sorts enters second section and sorts, first section mine tailing and second section chats that sorts after sorting all enters magnetic separation operation 6, second section product that sorts enters the 3rd section and sorts, the 3rd section product after sorting enters dehydration procedure 3, the 3rd section chats that sorts returns second section and sorts, each section reselection operation all adopts the 1500mm spiral chute of equal model to form each section reselection operation, the selected pulp density scope of every section operation is 20～30%, mine tailing gravity separation technology 2 is through three sections gravity concentrates that sort recovery, its nickel 〉=1.5%, copper 〉=0.4%, simultaneously owing to the intergrowth theory according to ore, cobalt, platinum, palladium, gold, rare metals such as silver will be with nickel, copper enters in its gravity concentrate and can extract simultaneously.

Gravity concentrate dehydration procedure 3, with mine tailing gravity separation technology 2 through three sections gravity concentrate filtering means dehydrations that sort recovery, its dehydration can adopt sedimentation basin to precipitate dehydration voluntarily or adopt mechanical dehydration, dehydration back product moisture content is 15～18%, the sedimentation basin specification can design its specification voluntarily according to gravity concentrate output, be generally 5 * 12m, 3-4.

Grinding procedure 4 adopts overflow or grate ball mill and grader or straight line shaker composition closed circuit grinding operation with the gravity concentrate after the dehydration; According to the grain size number of mineral, make useful mineral and gangue reach fully effectively monomer dissociation.Gravity concentrate at first enters the ball mill ore grinding, and ore milling product enters the grader classification, and ball mill is returned in the grader sand return, and classifier overflow enters flotation operation 5, and the classifier overflow product granularity is :-200 orders 75～80%, effluent concentration are 35～38%.Ore grinding and classifying equipoment all adopt domestic standard equipment, and ball mill is φ 1200 * 2400mm, and grader is φ 1000mm.

The grind grading overflow enters flotation operation 5, takes effective beneficiation reagent when adopting the floating separation method, collecting agent, and the oxide mineral activator, foaming agent and adjustment agent etc. are further reclaimed valuable mineral and valuable metal.Flotation operation 5 is selected by roughing flotation, flotation, scan one, scan two forms.Add the dressing agent of forming by collecting agent, oxide mineral activator, foaming agent, adjustment agent, inhibitor in the ore pulp behind ore grinding, ore pulp enters roughing flotation, roughly selecting product, to enter flotation selected, chats after flotation is selected enters roughing flotation, mine tailing after roughly selecting enters successively and scans one, scans two, scan one product and return roughing flotation, scan two product and return and scan one, the mine tailing after scanning is newborn mine tailing.Finally reach metal concentrate product through the selected product of flotation with production-grade.Its nickel 5～7%, copper 1～1.5%.Other rare metal also will enter in this concentrate product with its ambrose alloy.The collecting agent that is added in each operation of this flotation is a butyl xanthate, total consumption is 150 gram/tons, the oxide mineral activator is a copper sulphate, total consumption is 250 gram/tons, and foaming agent is composite drug C125, and total consumption is 350 gram/tons, the adjustment agent is a sodium sulphate, total consumption is 800 gram/tons, and inhibitor is a carboxymethyl cellulose, and total consumption is 600 gram/tons.Flotation operation 5 each operation pulp density average out to 25～30%, various medicaments compound concentration before adding each operation is 10%.The flotation device that flotation operation adopted adopts domestic standard model 6A flotation device.

Magnetic separation operation 6, it is selected that gravity tailings after 2 recovery of gravity treatment operation is carried out magnetic separation, reclaim the iron sulfur metal in the mine tailing, magnetic separation adopts two of permanent-magnet drum type magnetic separator φ 900 * 1800mm to carry out two subjobs, this equipment is domestic standard equipment, extract the iron sulfur metal in the mine tailing, final output troilite: iron 45%; Sulphur 28%.This technology magnetic separation operation 6 and flotation operation 5 are scanned the newborn mine tailing that the back produces, and concentrate to return original debris by sand pump and store up a little.

Claims

1. a nickel sulfide, copper tailings comprehensive recovery technology is characterized in that comprising successively following steps:

(a) CHARACTERISTICS OF TAILINGS SAND hydromining operation (1) is made the mine tailing ore pulp of 20～30% concentration with CHARACTERISTICS OF TAILINGS SAND, more described mine tailing ore pulp is delivered to mine tailing gravity separation technology (2);

(b) mine tailing gravity separation technology (2) sorts by three sections and forms, first section product that sorts enters second section and sorts, first section mine tailing and second section chats that sorts after sorting all enters magnetic separation operation (6), second section product that sorts enters the 3rd section and sorts, the 3rd section product after sorting enters dehydration procedure (3), and the 3rd section chats that sorts returns second section and sort, and mine tailing gravity separation technology (2) is through three sections gravity concentrates that sort recovery, its nickel 〉=1.5%, copper 〉=0.4%;

(c) gravity concentrate dehydration procedure (3) dewaters mine tailing gravity separation technology (2) through three sections gravity concentrates that sort recovery;

(d) Grinding procedure (4) carries out ore grinding, its granularity-200 order 75～85% with the gravity concentrate after the dehydration;

(e) flotation operation (5) is by roughing flotation, flotation is selected, scan one, scan two compositions, add in the ore pulp behind ore grinding by collecting agent, the oxide mineral activator, foaming agent, adjust agent, the dressing agent that inhibitor is formed, ore pulp enters roughing flotation, roughly selecting product, to enter flotation selected, chats after flotation is selected enters roughing flotation, mine tailing after roughly selecting enters successively and scans one, scan two, scan one product and return roughing flotation, scanning two product returns and scans one, mine tailing after scanning is newborn mine tailing, through the selected product of flotation, its nickel 5～7%, copper 1～1.5%;

(f) magnetic separation operation (6), it is selected that the gravity tailings after gravity treatment operation (2) recovery is carried out magnetic separation, reclaims the iron sulfur metal in the mine tailing, its iron 〉=45%, sulphur 〉=28%, the magnetic tailing after magnetic separation is selected is newborn mine tailing.

2. nickel sulfide according to claim 1, copper tailings comprehensive recovery technology, it is characterized in that: the collecting agent at the dressing agent described in the flotation operation (5) is a butyl xanthate, and total consumption is 150 gram/tons, and the oxide mineral activator is a copper sulphate, total consumption is 250 gram/tons, foaming agent is composite drug C125, and total consumption is 350 gram/tons, and the adjustment agent is a sodium sulphate, total consumption is 800 gram/tons, inhibitor is a carboxymethyl cellulose, and total consumption is 600 gram/tons, and its compound concentration is 10%.