Large vacuum furnace for processing arsenic-containing gold ore or arsenic concentrate and continuous operation method thereof

A vacuum furnace and gold mine technology, applied in the field of large-scale vacuum furnace and its continuous operation, can solve the problems of not being popularized widely and the lack of large-scale chemical industry production equipment, etc., and achieve the effect of low operating cost, fewer operators and high degree of automation

Inactive Publication Date: 2008-07-23
伍耀明 +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The semi-industrial test report of the former Soviet Union on the vacuum roasting of arsenic-containing gold ore, at 750 ° C, only 15 to 20 minutes to achieve the ideal arsenic removal requirements, there are also reports on the application of this achievement in industrial production, but not Not widely promoted, the main reason is that there is no large-scale industrial production equipment

Method used

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  • Large vacuum furnace for processing arsenic-containing gold ore or arsenic concentrate and continuous operation method thereof
  • Large vacuum furnace for processing arsenic-containing gold ore or arsenic concentrate and continuous operation method thereof
  • Large vacuum furnace for processing arsenic-containing gold ore or arsenic concentrate and continuous operation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The test design of this embodiment is a fully automatic continuous operation vacuum furnace with a diameter of 3.2 meters, which can process 600 tons of arsenic-containing gold ore per day.

[0063] The process and operating conditions of the fully automatic continuous operation vacuum furnace for processing arsenic-containing gold ore are as follows:

[0064] Referring to Fig. 11, a general device diagram of a large-scale vacuum furnace for processing arsenic-containing gold ore or arsenic concentrate and its fully automatic continuous operation method according to the present invention. Divided by the dotted line, there are six major areas: area A of the vacuum furnace body, area B of the automatic control device for concentrate conveying, area C of the material level photoelectric controller, area D of the water-cooled spiral slag discharger, area E of the product collection device, and area F of the tail gas treatment system. It is composed of parts, taking the area...

Embodiment 2

[0074] A fully automatic continuous operation vacuum furnace with a diameter of 1.2 meters was designed for the test, with a daily processing capacity of 50 tons of arsenic concentrate.

[0075] The equipment used in this embodiment and the process conditions for processing the arsenic concentrate are the same as in Embodiment 1.

Embodiment 3

[0077] In this embodiment, a vacuum furnace with a diameter of 2.1 meters is designed for discontinuous operation for processing arsenic concentrate, and each furnace is loaded with 8 to 15 tons of ore. The anti-corrosion measures, sealing structure and installation method of the electric heating tube used, the water-cooled screw machine, and the method for collecting products by the condensing drum are all the same as in Embodiment 1, the difference is that it is intermittent operation and there is no automatic control system. The vacuum smelting process conditions of this embodiment are: the vacuum distillation temperature is 700-850° C., the residual pressure of the vacuum system is 13.332 Pa-93324 Pa, and the distillation time can be stopped when the residue contains less than 0.5% arsenic.

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Abstract

The invention discloses a large scale vacuum furnace and continuous operation method for processing arsenical gold ore or arsenic concentrate; wherein, the vacuum furnace comprises a vertical furnace body, a horizontal furnace roof and a conical furnace bottom; a discharge tube, a flow rate control device and an electrical heating tube are arranged on the furnace roof; a vertical exhaust tube is extended from a skew joint on the lateral face of the furnace; a materiel level control observation window is arranged on the furnace body; a slag-guiding cone is arranged on the furnace bottom; a feeding system, a slag discharge system and a product collection system are arranged in the vacuum furnace, which are operated in vacuum. The large scale vacuum furnace and continuous operation method for processing arsenical gold ore or arsenic concentrate has the advantages of maximization of vacuum furnace, protecting electrical heating element, no air leakage, corrosion resistance of furnace mantle, sealed and degassed feeding, continuous feeding with the discharge tube fully filled with materials in the entire operation process, no dead angle in the slag discharge, stepwise product collection and automatic packing, and no three waste pollution in the production process and surrounding environment.

Description

1. Technical field [0001] The invention relates to the technical field of vacuum metallurgy in nonferrous smelting, in particular to a large-scale vacuum furnace for processing arsenic-containing gold ore or arsenic concentrate and its continuous operation method. 2. Background technology [0002] At present, most of the pretreatment procedures for difficult-to-treat arsenic-containing gold ores in my country are boiling roasting, and the roasting process is continuously strengthening measures for dust collection and automatic operation, and the production scale is constantly expanding. The construction of arsenic gold ore boiling roasting plant. However, the roasting of arsenic trioxide in the form of arsenic trioxide will inevitably cause the pollution of arsenic trioxide. It is difficult to control the pollution of arsenic trioxide by means of dust collection, and it is also difficult to control the low concentration of sulfur dioxide. [0003] The domestic method of prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B30/04F27B1/09F27B1/10F27B1/12F27B1/20F27B1/24
Inventor 伍耀明莫秀龙
Owner 伍耀明
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