Unlock instant, AI-driven research and patent intelligence for your innovation.

Pre-enrichment method of low-grade gold-contained vulcanized tailing gold

A low-grade, pre-enrichment technology, used in chemical instruments and methods, wet separation, solid separation, etc. problems, to achieve the effect of improving grade, simple process flow and beneficial to leaching and smelting

Active Publication Date: 2018-12-21
郑州中科新兴产业技术研究院 +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At the same time, the presence of metal sulfide minerals complicates the optimization of the gold cyanide process, making it difficult to increase the gold cyanide rate and increase the consumption of cyanide.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pre-enrichment method of low-grade gold-contained vulcanized tailing gold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for pre-enriching gold from low-grade gold-bearing sulfide tailings, the steps are as follows:

[0025] Low-grade gold-containing sulfide tailings were selected, containing 24.77% sulfur, 5.27% arsenic, and 2.16g / t gold. The raw materials were ground to a particle size of less than 0.074mm, accounting for 95.09%. Mixed flotation rougher H 2 SO 4 4000g / t, isobutyl potassium xanthate 200g / t, aniline black medicine 0g / t and 2 # Oil 20g / t, scanning isobutyl potassium xanthate 100g / t, 2 # Oil 20g / t.

[0026] Separation flotation concentration I, CaO 300g / t, adjust pulp pH to 8.1, inhibitor NH 4 Cl 500g / t, NaHSO 3 500g / t. Featured II, Inhibitor NH 4 Cl 200g / t, NaHSO 3 200g / t.

[0027] Centralized re-election of NH 4 Cl 100g / t, NaHSO 3 100g / t, isobutyl potassium xanthate 40g / t, 2 # The oil is 30g / t, and the concentration of flotation pulp is 50%. The re-election adopts a fine-grain shaker, the stroke is 14mm, the stroke frequency is 420n / min, and the f...

Embodiment 2

[0029] A method for pre-enriching gold from low-grade gold-bearing sulfide tailings, the steps are as follows:

[0030] Low-grade gold-bearing sulfide tailings were selected, containing 24.77% sulfur, 5.27% arsenic, and 2.16g / t gold, and the raw materials were ground to -0.074mm, accounting for 97.26%. Mixed flotation rougher H 2 SO 4 1000g / t, isobutyl potassium xanthate 150g / t, aniline black medicine 20g / t and 2 # Oil 40g / t, scanning isobutyl potassium xanthate 100g / t, 2 # Oil 25g / t.

[0031] Separation flotation concentration I, CaO 400g / t, adjust pulp pH to 8.6, inhibitor NH 4 Cl 400g / t, NaHSO 3 600g / t. Featured II, Inhibitor NH 4 Cl 400g / t, NaHSO 3 300g / t.

[0032] Centralized re-election of NH 4 Cl 150g / t, NaHSO 3 200g / t, isobutyl potassium xanthate 20g / t, 2 # The oil is 25g / t, and the concentration of flotation pulp is 30%. The re-election adopts slon-400 horizontal centrifugal concentrator, the speed is 600rpm, the rinsing water volume is 6.35L / min, and ...

Embodiment 3

[0034] A method for pre-enriching gold from low-grade gold-bearing sulfide tailings, the steps are as follows:

[0035] Low-grade gold-bearing sulfide tailings were selected, containing 24.77% sulfur, 5.27% arsenic, and 2.16g / t gold, and the raw materials were ground to -0.074mm, accounting for 96.25%. Mixed flotation rougher H 2 SO 4 3000g / t, isobutyl potassium xanthate 180g / t, aniline black medicine 40g / t and 2 # Oil 40g / t, scanning isobutyl potassium xanthate 100g / t, 2 # Oil 30g / t.

[0036] Separation flotation concentration I, CaO 200g / t, adjust pulp pH to 7.8, inhibitor NH 4 Cl 600g / t, NaHSO 3 400g / t. Featured II, Inhibitor NH 4 Cl 300g / t, NaHSO 3 400g / t.

[0037] Centralized re-election of NH 4 Cl 200g / t, NaHSO 3 300g / t, isobutyl potassium xanthate 60g / t, 2 #The oil is 20g / t, and the concentration of flotation pulp is 25%. The re-election adopts slon-400 horizontal centrifugal concentrator, the speed is 500rpm, the rinsing water volume is 5.18L / min, and t...

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

PropertyMeasurementUnit
Granularityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a pre-enrichment method of low-grade gold-contained vulcanized tailing gold. The pre-enrichment method comprises the following steps: (1) raw ores are grinded for mixing, flotation and tailing discarding to obtain mixed concentrates; (2) inhibitors are added in the mixed concentrates for inhibiting separation and flotation of arsenic pyrites to obtain gold-contained arsenic ores; and (3) the gold-contained arsenic ores are reselected by adopting a flotation-reselection combined process to obtain gold arsenic concentrates, so that gold achieves a pre-enriching effect, and the subsequent gold extraction is facilitated. Used raw materials are nonferrous metal mine vulcanized tailings; and the method is stable in treatment effect and simple in process flow.

Description

technical field [0001] The invention relates to the field of mineral processing, in particular to a method for pre-concentrating gold from low-grade gold-containing sulfide tailings. Background technique [0002] With the rapid development of the economy, the discharge and accumulation of tailings in my country are also increasing with the development of the mining industry. The main components of gold-bearing sulfide tailings are pyrite and arsenopyrite. Long-term accumulation and oxidation will produce sulfuric acid, etc., which is harmful to the ecological environment and is also a waste of gold resources. [0003] my country's gold concentrators mostly use the cyanide method to extract gold. Generally, the formation of refractory gold ores containing arsenic and sulfur is closely related to sulfide minerals such as pyrite, arsenopyrite, pyrrhotite and chalcopyrite. , Arsenopyrite, pyrrhotite, etc.) with reducing substances and cyanide-consuming metals (copper, lead, zinc...

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): B03B7/00
CPCB03B7/00
Inventor 赵俊利李永利郭强朱顺伟田登超付明波李会林李申
Owner 郑州中科新兴产业技术研究院