CN1051806C

CN1051806C - Selectively smelting tech. and appts. for fine particle of primary gold ore via contaminating

Info

Publication number: CN1051806C
Application number: CN96105414A
Authority: CN
Inventors: 王明玉
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-17
Filing date: 1996-04-17
Publication date: 2000-04-26
Anticipated expiration: 2016-04-17
Also published as: CN1138633A

Abstract

The present invention discloses selectively smelting technology and equipment for fine particle impregnating type primitive gold ores. Primitive ores can be crushed after the ore dressing is carried out; then, the primitive ores can be burnt; the ores after burnt can enter a pool for cyanogen socking processing, recovery and activated carbon adsorption, and gold can be obtained by analysis. The burning temperature of the primitive ores in a burning working procedure is 400 to 1200 DEG C, and simultaneously, oxygen can be pressed in. The selectively smelting device of the present invention can uniformly arrange reactors in a smelting furnace which is formed by refractory material. The reactors are connected with a burner and a gas out path by a flame path. The present invention solves the problems that in the process of selectively smelting metallic elements are easy to together ' escape ' with other elements. The present invention can cause primitive ores to realize qualitative change and machine body oxidation. The leaching rate can reach more than 85 % by utilizing the existing cyanidation technology. The present invention has the advantages of low production cost, simple and convenient technology and high economic value.

Description

Micro-grain impregnation raw gold ore dressing and smelting process and equipment

The present invention relates to a kind ofly, particularly select the technology of smelting and use the equipment that this arts demand uses for the micro-grain impregnation raw gold ore for the dressing and smelting process of gold mine and the equipment of use.

The micro-grain impregnation raw gold ore is the very strong regional mineral products of a kind of region, mainly be distributed in the area, the southwest of Guizhou Province in Guizhou Province in China, 150 tons of the gold mine storage capacities of verifying at present, the ore of micro-grain impregnation raw gold ore is divided into two types: primary ore and oxidized ore, this is wherein again based on primary ore, for oxidized ore, all have the selecting and smelting technology of comparative maturity both at home and abroad, and for the primary ore that occupies main reserves, in default of effective selecting and smelting technology, still can not obtain at present utilizing, mineral products can only can not be brought into play it as slow-witted ore deposit should effect; For primary ore, if its reaction can be oxidized ore, the method of then taking to pile up the cyaniding processing just can extract gold, and primary ore is converted to the difficult problem that oxidized ore has two aspects: the one, and how tens kinds of elements that coexist with gold element in the ore separate with gold element; The 2nd, form parcel after separating again, how about this parcel opened, gold element is separated; At present, the many research institutions of China have taked oxidizing roasting cyaniding and leaching process, pressurized heat oxidation cyaniding and leaching process, two oxidation style cyaniding and leaching process, microbiological oxidation extract technology or the like, in these technologies owing to do not grasp key parameter such as calcination temperature, time accurately, make gold element to carry out in the process with waste gas, waste water " escape " at aforesaid method, the rate of recovery of these technologies is lower like this, production cost is high, does not have economic worth.

The objective of the invention is: a kind of micro-grain impregnation raw gold ore dressing and smelting process and equipment are provided, this technology has mainly designed ideal smelting temperature and oxygenation mode, and the equipment that reaches this arts demand, it solved select gold element in the smelting process easily with other element problem of " effusion " jointly, can make primary ore qualitative change, ore body oxidation, utilize existing cyanidation technique, its leaching yield reaches more than 85%, its production cost is low, technology is easy, the economic worth height.

The present invention constitutes like this: it is to carry out after the ore dressing primary ore broken, then primary ore is carried out calcination, enter after the ore cooling after the calcination and carry out the processing of cyanogen bubble in the pond, your liquid reclaims, carry out charcoal absorption afterwards, at last it is resolved gold, in the calcination operation, temperature to the primary ore calcination is 400-1200 degree centigrade, and be pressed into oxygen or air from discharge port (7), temperature in the calcination reactor (2) is controlled between 400-1200 degree centigrade, concrete: as to be that last 1/3rd sections temperature with reactor (2) is controlled to be 400-500 degree centigrade, a temperature of/3rd sections in the reactor (2) is controlled to be 700-900 degree centigrade, following 1/3rd sections temperature of reactor (2) is controlled to be 1100-1200 degree centigrade, and the time that primary ore reacts in reactor (2) is 3-5 hour; Say accurately: be that the temperature in the calcination reactor (2) is controlled between 400-1200 degree centigrade, accurately: be that last 1/3rd sections temperature with reactor (2) is controlled to be 400 degrees centigrade, 1/3rd sections temperature in the reactor (2) is controlled to be 800 degrees centigrade, following 1/3rd sections temperature of reactor (2) is controlled to be 1200 degrees centigrade, the time that primary ore reacts in reactor (2) is 3-5 hour; Utilize caliber for 1-2 centimetre pipe, to be pressed into pressure be 1-2 atmospheric oxygen or air.A kind of micro-grain impregnation raw gold ore smelt-collecting equipment, evenly distributed reactor (2) in the smelting furnace that constitutes by refractory materials (1), one side of reactor (2) connects burner (6) by quirk (3), the opposite side of reactor (2) connects gas off-take (5) by flue (4), and discharge port (7) is arranged at the bottom of reactor (2).Reactor (2) has one group at least, and two groups of above reactors (2) are communicated with by flue (4).

The invention solves select gold element in the smelting process easily with other element problem of " escape " jointly, can make primary ore qualitative change, ore body oxidation and avoid forming once more inclusion, utilize existing cyanidation technique to extract again, its leaching yield reaches more than 85%, its production cost is low, technology is easy, the economic worth height has reached goal of the invention of the present invention.

Accompanying drawing 1 is an equipment front view of the present invention, and accompanying drawing 2 is the vertical view of present device.

Embodiments of the invention 1: evenly distributed two rows, each 8 annular reactor (2) of every row in the smelting furnace that constitutes by refractory brick (1), one side of reactor (2) connects coal stove burner (6) by quirk (3), the opposite side of reactor (2) connects gas off-take (5) by flue (4), discharge port (7) is arranged at the bottom of reactor (2), and reactor (2) has one group; During use primary ore carried out after the ore dressing broken, point coal furnace burner carries out calcination, when calcination, last 1/3rd sections temperature of reactor (2) is controlled to be 400 degrees centigrade, a temperature of/3rd sections in the reactor (2) is controlled to be 800 degrees centigrade, following 1/3rd sections temperature of reactor (2) is controlled to be 1200 degrees centigrade, then primary ore is poured into the interior calcination of reactor (2) from the top of reactor (2), the time that primary ore reacts in reactor (2) is 4 hours, and to utilize caliber simultaneously be 1.5 centimetres pipe, being pressed into pressure is 2 atmospheric industrial oxygens, ore after the calcination is from discharge port (7) discharging, being cooled to the ore temperature is to put into the pond behind the normal temperature to carry out the processing of cyanogen bubble, soak time is 72 hours, carrying out your liquid then reclaims, carry out charcoal absorption afterwards, at last it is resolved gold.

Embodiments of the invention 2: evenly distributed two rows, each 10 annular reactor (2) of every row in the smelting furnace that constitutes by refractory brick (1), the side of reactor (2) connects electric alkene by quirk (3) and burns device (6), the opposite side of reactor (2) connects gas off-take (5) by flue (4), discharge port (7) is arranged at the bottom of reactor (2), and reactor (2) has two groups; During use primary ore carried out after the ore dressing broken, then primary ore is put into reactor (2), light electric burner and carry out calcination, when calcination, temperature in the reactor is controlled at 400-1200 degree centigrade, and utilize simultaneously that caliber is 2 centimetres a pipe, to be pressed into pressure be 1.5 atmospheric air, it is to put into the pond behind the normal temperature to carry out that cyanogen bubble is handled, soak time is 72 hours that ore after the calcination is cooled to the ore temperature, carrying out your liquid then reclaims, carry out charcoal absorption afterwards, at last it is resolved gold.

In the present invention, can calcination be the gordian technique that propose gold, its reason is that the gold element in the primary ore is mainly composed in the parcel that is stored in sulfide mineral and clay silicate with the micro-shape in Asia and in the xln, calcination temperature is low, then parcel can not disintegrate, crystallization can not be opened, the calcination temperature height then gold element easily with waste gas " escape ", test repeatedly through the inventor, selected calcination temperature has also been determined the oxygenation method, like this can be so that can separate and no longer produce new inclusion with gold element with other element of gold element coexistence, this is a key point of the present invention.

Claims

1, a kind of micro-grain impregnation raw gold ore dressing and smelting process, it is to carry out after the ore dressing primary ore broken, then primary ore is carried out calcination, enter after the ore cooling after the calcination and carry out the processing of cyanogen bubble in the pond, your liquid reclaims, carry out charcoal absorption afterwards, at last it is resolved gold, it is characterized in that: in the calcination operation, be pressed into oxygen or air from discharge port (7), last 1/3rd sections temperature of reactor (2) is controlled to be 400-500 degree centigrade, a temperature of/3rd sections in the reactor (2) is controlled to be 700-900 degree centigrade, following 1/3rd sections temperature of reactor (2) is controlled to be 1100-1200 degree centigrade, and the time that primary ore reacts in reactor (2) is 3-5 hour.

2, according to the described micro-grain impregnation raw gold ore of claim 1 dressing and smelting process, it is characterized in that: last 1/3rd sections temperature of reactor (2) is controlled to be 400 degrees centigrade, 1/3rd sections temperature in the reactor (2) is controlled to be 800 degrees centigrade, following 1/3rd sections temperature of reactor (2) is controlled to be 1200 degrees centigrade.

3, according to claim 1,2 described micro-grain impregnation raw gold ore dressing and smelting process, it is characterized in that: utilize caliber for 1-2 centimetre pipe, to be pressed into pressure be 1-2 atmospheric oxygen or air.

4, a kind of micro-grain impregnation raw gold ore smelt-collecting equipment, it is characterized in that: evenly distributed reactor (2) in the smelting furnace that constitutes by refractory materials (1), one side of reactor (2) connects burner (6) by quirk (3), the opposite side of reactor (2) connects gas off-take (5) by flue (4), and discharge port (7) is arranged at the bottom of reactor (2).

5, according to the described micro-grain impregnation raw gold ore of claim 4 smelt-collecting equipment, it is characterized in that: reactor (2) has one group at least, and two groups of above reactors (2) are communicated with by flue (4).