Pyrite inhibitor in lead-sulfur bulk concentrate and preparation method of pyrite inhibitor

A technology of mixing concentrate and pyrite, applied in solid separation, flotation, etc., can solve the problems of unsatisfactory suppression effect, excessive consumption of flotation reagents, poor selectivity of suppression effect, etc., and achieve excellent synergistic suppression effect

Inactive Publication Date: 2019-10-25
CHIHONG TECH & ENG +1
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional flotation process uses lime to suppress pyrite, the amount of lime is large, and calcium ions cause adverse interference to upstream, downstream and surrounding operations
Lime is not easy to dissolve, and it is easy to settle and block the chemical pipe during the transportation process. It is difficult to add the chemical and the stability of the process is poor. , the scale of the tank pipe is serious, and the calcium ion in the mixed floating stage

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The invention discloses an inhibitor of pyrite in lead-sulfur mixed concentrate, which comprises sodium hydroxide, sodium sulfite, sodium thiosulfate and fulvic acid. Its preparation method comprises the following steps:

[0016] 1) Take 10 parts of sodium hydroxide and 0.1 part of fulvic acid to prepare a 40%wt solution, and stir at 70°C for 30 minutes;

[0017] 2) Take 6 parts of sodium sulfite and 4 parts of sodium thiosulfate to prepare a 30% aqueous solution, and stir at 30°C for 5 minutes;

[0018] 3) Mix the products obtained in step 1) and step 2), and stir at 30-35°C for 20 minutes to obtain a light yellow solution, concentrate and crystallize to obtain a light yellow powder product, which is the pyrite in the lead-sulfur mixed concentrate mine inhibitors.

Embodiment 2

[0020] This example is an application example of the pyrite inhibitor in the lead-sulfur mixed concentrate prepared in Example 1.

[0021] (1) Mineral raw materials

[0022] A refractory ore with high lead, high zinc and high sulfur in Yunnan, the raw ore lead grade is 5.67%, zinc grade is 17.52%, and iron grade is 14.84%. The ore mainly includes galena, sphalerite, pyrite, trace arsenopyrite, dolomite, calcite, followed by quartz and sericite.

[0023] (2) Pharmaceutical preparation and operating conditions

[0024] 1) Grind the high-grade lead-zinc-sulfur raw ore with a ball mill. The grinding fineness -0.074mm accounts for 65-70%. t, carry out lead-sulfur mixed flotation to obtain lead-sulfur mixed concentrate;

[0025] 2) Add 1,500 g / t of pyrite inhibitor in the lead-sulfur mixed concentrate described in Example 1, perform flotation after 20 minutes of pulping, and add the pyrite inhibitor in the lead-sulfur mixed concentrate described in the present invention 500g / t a...

Embodiment 3

[0027] This example is another application example of the pyrite inhibitor in the lead-sulfur mixed concentrate prepared in Example 1.

[0028] (1) Mineral raw materials

[0029] Another high-lead, high-zinc, high-sulfur refractory ore in Yunnan, the raw ore lead grade is 9.69%, zinc grade is 19.31%, and iron grade is 14.87%. The ore mainly includes galena, sphalerite, pyrite, dolomite, calcite, quartz and so on.

[0030] (2) Pharmaceutical preparation and operating conditions

[0031] 1) Grind the high-grade lead-zinc-sulfur raw ore with a ball mill. The grinding fineness -0.074mm accounts for 65-70%. t, carry out lead-sulfur mixed flotation to obtain lead-sulfur mixed concentrate;

[0032] 2) Add 1600g / t of pyrite inhibitor in the lead-sulfur mixed concentrate described in Example 1, perform flotation after 20 minutes of pulping, and add the pyrite inhibitor in the lead-sulfur mixed concentrate described in the present invention With a concentration of 600g / t, after one ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a pyrite inhibitor in a lead-sulfur bulk concentrate and a preparation method of the pyrite inhibitor, and belongs to the technical field of beneficiation reagent preparation.The pyrite inhibitor is prepared from sodium hydroxide, sodium sulfite, sodium thiosulfate and fulvic acid. The preparation method comprises the following steps that (1) 10 parts of the sodium hydroxide and 0.1 part of fulvic acid are taken for preparing a 40%wt solution, and stirring is conducted for 30 minutes at 70 DEG C; (2) 6 parts of the sodium sulfite and 4 parts of the sodium thiosulfateare taken for preparing a 30% aqueous solution, and stirring is conducted for 5 minutes at 30 DEG C; (3) products obtained from the step (1) and the step (2) are mixed and stirred for 20 minutes underthe condition of 30-35 DEG C, faint yellow powder is obtained through crystallization concentration, and namely the pyrite inhibitor is obtained. According to the pyrite inhibitor in the lead-sulfurbulk concentrate and the preparation method of the pyrite inhibitor, the purpose that pyrite in a residual galena and pyrite mixed concentrate of a high collector is effectively inhibited can be achieved by using the product obtained through the preparation method, the using cost is low, the metal recovery rate is high, the pressure of upstream and downstream operation and water treatment operation can be lowered, the adaptability for flotation separation of the high-grade hard-to-separated lead-sulfur bulk concentrate is high, and the effect is significant.

Description

technical field [0001] The invention belongs to the technical field of preparation of mineral dressing agents, in particular to a method for preparing pyrite inhibitors in lead-sulfur mixed concentrates. Background technique [0002] For lead-sulfur mixed flotation concentrates with high chemical residues, since the mixed flotation stage is a weak alkali process, the content of heavy metal ions in the slurry is unavoidable, resulting in the activation of pyrite by copper and lead ions and the adsorption of a large amount of collectors. The conventional flotation process uses lime to suppress pyrite, and the amount of lime used is large. At the same time, calcium ions cause adverse interference to upstream, downstream and surrounding operations. Lime is not easy to dissolve, and it is easy to settle and block the chemical pipe during the transportation process. It is difficult to add the chemical and the stability of the process is poor. , the scale of the tank pipe is serio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B03D1/018B03D101/06B03D103/02
CPCB03D1/018B03D2201/06B03D2203/02
Inventor 高连启刘志成李广利惠世和赵华科谢立志罗进郎召有何志红孙立张贤何艳平李昕妍
Owner CHIHONG TECH & ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap