A method for smelting antimony sulfide gold ore in an oxygen-enriched molten pool

An oxygen-enriched molten pool smelting and antimony gold sulfide technology is applied in the field of antimony gold smelting, which can solve the problems of unavailability of flue gas sulfur dioxide and high energy consumption, and achieve the effects of saving coke consumption and reducing gold loss.

Active Publication Date: 2020-07-17
HUNAN ANHUA ZHAZIXI MINING
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of high energy consumption and unusable flue gas sulfur dioxide in the existing antimony-gold ore volatilization smelting technology, the purpose of the present invention is to provide a method for smelting antimony-gold ore in an oxygen-enriched molten pool

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
  • A method for smelting antimony sulfide gold ore in an oxygen-enriched molten pool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The cross-sectional area of ​​the hearth is 2m 2 The side-blown furnace is used as an oxidation furnace, and the cross-sectional area of ​​the hearth is 2m 2 The side blowing furnace is used as a reduction furnace as well as a 10m 2 The reverberatory furnace was tested as a blowing furnace.

[0055] Ingredients: The antimony-gold sulfide concentrate is mixed with 4% by weight of lime to granulate into pellets with a particle size of less than 25mm. The mass percentage of Sb in the pellets is 35.50%, the content of Au is 65.67g / t, and the content of SiO 2 The mass percentage content of Fe is 13.20%, the mass percentage content of Fe is 12.10%, the mass percentage content of CaO is 5.45%, the mass percentage content of S is 22.30%, and the water content of pellets is 7.9%. The granulated pellets are mixed with 4% iron ore and 6.5% limestone by mass and enter the oxidation furnace together for oxidation smelting.

[0056] Oxidation smelting: pellets, iron ore, and limes...

Embodiment 2

[0063] The cross-sectional area of ​​the hearth is 2m 2 The side-blown furnace is used as an oxidation furnace, and the cross-sectional area of ​​the hearth is 2m 2 The side blowing furnace is used as a reduction furnace as well as a 10m 2 The reverberatory furnace was tested as a blowing furnace.

[0064] Oxidation smelting: 10.5% water content, 38.5% antimony mass percentage, 55.5g / t gold, SiO 2 The mass percentage composition of Fe is 18.5%, the mass percentage composition of Fe is 15.3%, the mass percentage composition of CaO is 2.4%, and the mass percentage composition of S is 18.6%. Iron ore crushed to a particle size below 20mm and fine lime with a weight percentage of 3.5% are evenly added into the oxidation furnace from the top by metering; 2 The flow rate and pellet feed are (250Nm 3 ) / (t pellets), the melting temperature is 1050°C-1150°C; the pressure of the oxygen-enriched air is 0.40MPa; the oxygen content of the oxygen-enriched air is 88%. The crude antimony...

Embodiment 3

[0071] The cross-sectional area of ​​the hearth is 2m 2 The side-blown furnace is used as an oxidation furnace, and the cross-sectional area of ​​the hearth is 2m 2 The side blowing furnace is used as a reduction furnace as well as a 10m 2 The reverberatory furnace was tested as a blowing furnace.

[0072] Ingredients: The antimony-gold sulfide concentrate is mixed with 10% by weight of lime to granulate into pellets with a particle size of less than 20mm. The mass percentage of Sb in the pellets is 40.50%, the content of Au is 45.67g / t, SiO 2 The mass percentage content of Fe is 11.80%, the mass percentage content of Fe is 16.10%, the mass percentage content of CaO is 8.45%, the mass percentage content of S is 20.30%, and the pellet water content is 8.8%. The granulated pellets are mixed with 8% by mass iron ore and 4.5% by mass limestone and enter the oxidation furnace together for oxidation smelting.

[0073] Oxidation smelting: pellets, iron ore, and limestone are evenl...

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for smelting antimony sulfide gold ore oxygen-enriched molten pool. The method for smelting the antimony sulfide gold ore oxygen-enriched molten pool comprises a three-connection furnace process, oxidation-reduction-blowing. According to the method for smelting the antimony sulfide gold ore oxygen-enriched molten pool, the self-heating smelting of the antimony sulfide gold ore is achieved, the separation of antimony and gold is achieved, and energy conservation and consumption reduction are achieved; continuous operation is achieved, and energy consumption is reduced; no antimony matte is produced, the consumption of the flux is reduced, the yield of the slag is reduced, the loss of antimony and gold is reduced, and the recovery rate of antimony and gold isimproved; the quality of antimony oxide is good, and can be directly smelted to obtain refined antimony; the quality of the antimony-rich is better; and oxidation smelting stage flue gas can be usedfor preparing sulfuric acid with the content of more than 98%, and sulfur dioxide is utilize.

Description

technical field [0001] The invention belongs to the field of antimony-gold smelting, and in particular relates to a method for smelting antimony-gold ore in an oxygen-enriched molten pool. Background technique [0002] The existing smelting of antimony sulfide gold concentrate usually adopts the blast furnace volatilization smelting technology. The antimony in the antimony sulfide gold concentrate is volatilized into the dust in the form of antimony oxide to form antimony oxygen powder, and the gold enters the front bed and is captured by antimony to form noble antimony , this process requires a large amount of coke as a heat source, which consumes a lot of energy, and at the same time produces a large amount of low-concentration SO2 flue gas, which requires a lot of cost for processing, SO 2 cannot be exploited. [0003] The antimony smelting industry is currently conducting a large amount of oxygen-enriched smelting technology research, and the antimony smelting blast fur...

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
Patent Type & AuthorityPatents(China)
IPC IPC(8): C22B30/02C22B11/02
CPCC22B11/02C22B30/02
Inventor邝江华
OwnerHUNAN ANHUA ZHAZIXI MINING