Method for recycling zinc from zinc-contained resources through synchronous flotation-sulfation roasting

A sulfation roasting and resource technology, which is applied in flotation, process efficiency improvement, solid separation and other directions, can solve the problems of non-ferrous metal oxide ore and mixed ore sorting, and no engineering beneficiation technology has been formed, and achieve recovery rate. High, less pollution, the effect of processing a wide range of zinc resources

Active Publication Date: 2017-04-26
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Mineral separation and enrichment are the key to the efficient utilization of non-ferrous metal non-traditional mineral resources. However, there have been relatively few related basic researches at home and abroad for many years, and no effective engineering mineral processing technology has been formed. Low-grade non-ferrous metal oxide ores and mixed ores Sorting has always been a worldwide problem

Method used

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  • Method for recycling zinc from zinc-contained resources through synchronous flotation-sulfation roasting
  • Method for recycling zinc from zinc-contained resources through synchronous flotation-sulfation roasting

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0021] Embodiment 1: as figure 1 Shown, this zinc-containing resource synchronous flotation-sulfation roasting reclaims the method for zinc, and its concrete steps are as follows:

[0022] (1) Crushing and finely grinding the sphalerite, in which the sphalerite with a particle size of less than 200 meshes accounts for 60% of the total sphalerite quality, and roughing agents (1kg / t CaO, 300g / t H 2 o 2 , 400g / t Na 2 SiO 3 , 400g / t (NaPO 3 ) 6 kg / t, 2kg / t Na 2 S, 200g / t dodecylamine) was added to sphalerite and roughed for 5 minutes to obtain rough concentrate and roughed tailings; the scavenging agent (2 kg / tNa 2 S, 50 g / t dodecylamine) is added to the roughing tailings for the first scavenging for 2 minutes to obtain a scavenging medium and a scavenging tailings; add a scavenging agent (50 g / t dodecylamine) to a scavenging Carry out the second scavenging of the tailings for 2 minutes to obtain the secondary scavenging and secondary scavenging tailings; combine the coarse...

Embodiment 2

[0028] Embodiment 2: as figure 1 Shown, this zinc-containing resource synchronous flotation-sulfation roasting reclaims the method for zinc, and its concrete steps are as follows:

[0029] (1) Crushing smithsonite, in which smithsonite with a particle size of less than 180 mesh accounts for 70% of the total smithsonite mass, roughing agents (1.5kg / t CaO, 400g / t H 2 o 2 , 500g / t Na 2 SiO 3 , 500g / t (NaPO 3 ) 6 , 8kg / t Na 2 S, 400g / t dodecylamine) was added to smithsonite for roughing for 6 minutes to obtain rough concentrate and roughing tailings; the scavenging agent (6kg / t Na 2 S, 80g / t dodecylamine) is added to the roughing tailings for the first scavenging for 4 minutes to obtain a scavenging medium and a scavenging tailing; add a scavenging agent (70g / t dodecylamine) to a scavenging tail The ore is swept for the second time for 4 minutes to obtain the secondary scavenging and tailings; combine the coarse concentrate, the first scavenging and the second scavenging to...

Embodiment 3

[0035] Embodiment 3: as figure 1 Shown, this zinc-containing resource synchronous flotation-sulfation roasting reclaims the method for zinc, and its concrete steps are as follows:

[0036] (1) The low-grade zinc oxide ore is crushed and finely ground, among which the zinc oxide ore with a particle size of less than 160 mesh accounts for 80% of the total zinc oxide ore quality, and the roughing agent (2kg / t CaO, 600g / t H 2 o 2 、600g / t Na 2 SiO 3 , 600g / t (NaPO 3 ) 6 , 10kg / t Na 2 S, 600g / t dodecylamine) was added to zinc oxide ore and roughed for 8 minutes to obtain rough concentrate and roughed tailings; the scavenging agent (10kg / t Na 2 S, 150g / t dodecylamine) was added to the roughing tailings for the first scavenging for 5 minutes to obtain a scavenging medium ore and a scavenging tailing; add a scavenging agent (100g / t dodecylamine) to a scavenging tail The ore is scavenged for the second time for 5 minutes to obtain the secondary scavenging and tailings; combine th...

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Abstract

The invention relates to a method for recycling zinc from zinc-contained resources through synchronous flotation-sulfation roasting and belongs to the technical field of hydrometallurgy. Blende, smithsonite, sulfur oxygen mixed zinc ore, low-grade zinc oxide ore, blast furnace gas dust or electric furnace smoke and other zinc-contained raw materials are broken and levigated, then, one-time roughing-twice scavenging is carried out to obtain zinc concentrate, roasting is carried out after the zinc concentrate is dried, obtained roasted products are leached out through a dilute acid solution, and acid leaching dregs are leached out through an ammonia solution; liquid-solid separation is carried out after leaching is completed, and ammonia leaching liquid and ammonia leaching dregs are obtained; and the ammonia leaching dregs are subjected to acid leaching again, acid leaching liquid and the ammonia leaching liquid are mixed, then, electrodeposition is carried out, and high-purity electric zinc is prepared. The method has the beneficial effects that the zinc recycling rate is high, less contamination is caused, time is shorter, and the treatment range of the zinc resources is wide.

Description

technical field [0001] The invention relates to a method for synchronous flotation-sulfation roasting of zinc-containing resources to recover zinc, and belongs to the technical field of hydrometallurgy. Background technique [0002] Mineral separation and enrichment are the key to the efficient utilization of non-ferrous metal non-traditional mineral resources. However, there have been relatively few related basic researches at home and abroad for many years, and no effective engineering mineral processing technology has been formed. Low-grade non-ferrous metal oxide ores and mixed ores Sorting has always been a worldwide problem. Synchronous recovery of sulfide minerals and oxidized minerals can make short-process, clean and efficient use of non-ferrous metal non-traditional resources. Therefore, it is urgent to develop a high-efficiency simultaneous separation theory and technical system for mixed ore to realize the separation and separation of low-grade multi-mineral phas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B19/02C22B1/06C22B3/06C22B3/14B03D1/018B03D103/02
CPCB03D1/018B03D2203/02C22B1/06C22B3/06C22B3/14C22B19/02Y02P10/20
Inventor 彭金辉杨坤李世伟张利波马爱元李浩宇裴健男
Owner KUNMING UNIV OF SCI & TECH
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