Production technology for one-time tailing combustion in stibium reverberatory furnace
A production process and reverberatory furnace technology, which is applied in the field of antimony reverberatory furnace disposable slag production process, can solve the problems of high cost, water environment pollution, and large amount of foaming slag, and achieve saving of process investment, reduction of overall cost, economical significant effect
Inactive Publication Date: 2011-08-17
湖南东港锑品有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, this process also has many deficiencies: First, the amount of foamy slag returned to the blast furnace is large, and the antimony content is high. According to the conventional reverberatory furnace, the hearth area is 16m 2 According to statistics, the amount of slag produced by each furnace of antimony is about 10 tons, and the grade is between 30-50%. The amount of antimony oxygen is large, reaching about 80 tons (Sb76%), and the direct recovery rate of antimony metal is low, only 78-80%, and the recovery rate is also low; the third is that the production cost of a single furnace is high, and a large amount of bubble slag produced is returned to the blast furnace Re-volatility smelting increases the cost of smelting, and the recovery rate of antimony metal is lower than that of primary ore, and the loss of metal is large; the fourth is that the generated arsenic-alkali slag needs to be recovered by wet treatment, which is not only expensive but also causes Serious pollution of the water environment
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] Below in conjunction with embodiment, the present invention will be further described.
[0028] In this embodiment, 10m 2 Taking the reverberatory furnace as an example, the process flow is as follows:
[0029] A, reverberatory furnace is used coal (available bituminous coal or coal washing, present embodiment adopts bituminous coal; Requirement: the fixed carbon in the coal is at 60-70%, and volatile matter is greater than 22-26%, and ash content is less than 12%, and moisture is less than 3%, Particle size is less than 20-40mm) heating, combustion intensity greater than 30-50kg / (m 2 .h) [this embodiment adopts 40kg / (m 2 .h)] above; the temperature of the reduction smelting furnace is maintained at 1250-1350°C (1300°C is used in this embodiment), and the temperature in the first working door area is controlled at 1100-1200°C; Add fuel once every 30 minutes, loosen the fire at the same time, keep the coal seam thickness at 300-400mm (this embodiment adopts 350mm), an...
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
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a production technology for one-time tailing combustion in a stibium reverberatory furnace, which belongs to the technical field of smelting. The technical process comprises the following steps: A. heating the reverberatory furnace with coal by using a thin coal multi-combustion method; B. adding arsenic caustic sludge, and adding antimony oxide powder at different stages;C. comprising 4-6% of reducer, 1-3% of flux and balance of antimony oxide powder in the antimony oxide powder; D. carrying out reduction, continuing to adding the reducer at different stages, whereinthe quantity of the reducer in the whole process does not exceed 10-20% of the weight of the antimony oxide powder; and E. sampling and assaying, and when the content of Sb in the laboratory report is lower than 2%, opening the sludge notch to discharge the tailings. The invention can increase the stibium content and recovery rate, does not need to process the arsenic caustic sludge by a wet process, reduces the environmental pollution and the production cost, and can be used for smelting crude stibium.
Description
technical field [0001] The invention relates to the technical field of smelting, in particular to a production process of the antimony reverberatory furnace disposable slag for crude antimony smelting. Background technique [0002] In the prior art, when crude antimony is smelted, the antimony reverberatory furnace production process (multiple firing) includes: reverberatory furnace melting and reduction, crude antimony refining, slag treatment, high-temperature furnace gas cooling and dust collection. The production time of furnace antimony ingots is short (4-5 days); and the quality requirements for fuel bituminous coal are not high, and the temperature requirements for multiple firings are not high, about 800-1000°C; at the same time, the unit consumption of soda ash is also low. Less, therefore, adopted by most smelting enterprises. However, this process also has many deficiencies: First, the amount of foamy slag returned to the blast furnace is large, and the antimony ...
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
Login to View More Patent Type & AuthorityPatents(China)
IPC IPC(8): C22B30/02
CPCY02P10/20
Inventor阳金升胡时专李羽
Owner湖南东港锑品有限公司