CN211814608U

CN211814608U - Antimony ore bottom-blowing top-blowing mixed molten pool smelting converter

Info

Publication number: CN211814608U
Application number: CN201922166636.4U
Authority: CN
Inventors: 王卫国
Original assignee: Guangxi Wanshizhi Rare Precious Metal Technology Co ltd
Current assignee: Guangxi Wanshizhi Rare Precious Metal Technology Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-10-30
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses a converter is smelted to antimony ore bottom-blown top-blown mixed molten bath, it includes horizontal cylindric furnace body, the furnace body includes furnace body shell and locates the furnace chamber in the furnace body shell, be equipped with refractory material between furnace body shell and the furnace chamber, furnace body shell one end is equipped with control pivoted walking gear, the other end is equipped with driven rotating gear, furnace body shell side or a terminal surface are provided with the dog-house, another terminal surface is provided with the exhaust port, the exhaust port is connected with the flue non-contact, be equipped with respectively on the furnace body shell one or more bottom-blown wind eye and one or more jack for the top-blown, bottom-blown wind eye and jack for the top-blown pass furnace body shell and refractory material respectively and furnace intracavity communicate with each other. The technical scheme of the utility model can improve the productivity effectively, reduce the energy consumption, improve economic technology index, reduction in production cost.

Description

Antimony ore bottom-blowing top-blowing mixed molten pool smelting converter

Technical Field

The utility model relates to an antimony ore bottom-blowing and top-blowing mixed bath smelting converter.

Background

The traditional antimony ore rough smelting process is more widely applied with three processes of vertical shaft furnace volatilization roasting, open hearth furnace volatilization roasting and blast furnace volatilization smelting, wherein the vertical shaft furnace volatilization roasting and the open hearth furnace volatilization roasting are listed as obsolete backward productivity by the nation because of low productivity and large labor intensity. ConventionalThe antimony ore rough smelting process is mainly an antimony blast furnace volatilization smelting process, and the specific scheme is that after being pelletized, powder ore and lump ore are mixed with coke, iron ore, limestone and the like according to a proper proportion, the mixture is put into a furnace from a furnace top bin in batches in a classified manner, volatilization, smelting and oxidation reaction are carried out in a hearth above a furnace belly water jacket tuyere area to generate antimony oxide, the smoke of antimony oxide dust enters a subsequent condensation dust collecting system through a flue, and the antimony oxide dust is cooled, settled and collected in the condensation dust collecting system and then is conveyed to the next antimony reduction and refining process through pipeline air pressure; the gangue in the ore reacts with two fluxes of iron ore and limestone in the hearth to generate slag, the slag enters the hearth and is discharged out of the furnace through a slag port of the hearth or flows into a front bed through a slag channel and then is discharged out of the furnace. The antimony ore rough smelting blast furnace volatilization smelting process has the characteristics of strong raw material applicability, large processing capacity, high mechanization degree and the like, and becomes the unique antimony ore rough smelting process widely popularized and applied at present. But the blast furnace volatilization smelting process has high energy consumption and tail gas SO₂The concentration is low, the acid can not be prepared, the economic benefit is not ideal, the development almost has no technology upgrading progress in half a century, the industry development is seriously restricted, compared with other new technologies which are different day by day in non-ferrous metal smelting, the technology is gradually out of the bounds, and the technology has gap with the requirements of environment protection, energy conservation and emission reduction provided by the state.

The smelting process of the molten pool is a brand new non-ferrous metal smelting technology developed in the last two decades and is widely applied to smelting production processes of non-ferrous metals such as copper, lead, nickel, tin and the like. The smelting process of molten pool is that the charge is added directly into the melt pool blown by blast to make the added material be wrapped and stirred by gas turbulence in the molten pool by blowing air or oxygen-enriched air or pure oxygen gas into the melt in the furnace, so as to quickly complete the heat transfer between gas, liquid and solid phases and make a violent physical and chemical reaction. The concentrate is simultaneously subjected to the metallurgical processes of heating, melting, oxidation, reduction, matte formation, slag formation and the like in the molten pool. Because the smelting method uses compressed air to intensively stir the molten pool, the oxidation or reduction reaction in the melt is rapidly carried out, and the production efficiency is high. According to different blowing modes, the smelting process of the molten pool can be divided into three main types of top blowing, side blowing and bottom blowing.

The molten pool smelting process is developed in the last two decades, and has the advantages of low energy consumption, high yield, tail gas capable of producing acid, high automation degree and the like, so that the molten pool smelting process is developed rapidly, and a plurality of new molten pool smelting methods are derived, wherein the new molten pool smelting methods comprise a nonindard method, a mitsubishi method, a teniendt method, a silver copper smelting method, an oxygen bottom blowing lead smelting method, a chenkov smelting method, a top-blown rotary converter method, an Isa smelting method, a converter direct copper smelting method and the like. Representative oxygen-enriched bath smelting process manufacturers in China include Hunan Water gap mountain, Henan Yuguang gold lead, Henan Jiyuan Jinli, Henan Wanyang, Yunnan copper industry, Yunnan tin industry and the like.

In the course of research and practice on this method, researchers of the present invention find that: the smelting converter comprises a set of cylindrical converter system and is characterized in that a horizontal cylindrical furnace body shell is simultaneously provided with a bottom blowing air hole and a top blowing jack. After being crushed to the required granularity, furnace materials such as mineral material flux and the like are directly added into a blast-boiling melt pool in the cylindrical furnace body through the feeding port, and air, oxygen-enriched air or pure oxygen is blown into the melt in the furnace body in a bottom blowing mode through a bottom blowing wind hole arranged on the shell of the furnace body, so that the added furnace materials carry out physical and chemical reactions in the melt pool; and at the same time of bottom blowing, a top blowing air pipe is used for supplementing oxidation to the top blowing air of the near liquid level of the melt in the furnace in a top blowing mode through a top blowing jack arranged on the shell of the furnace body, so that the metallurgical reaction process is accelerated. The technical scheme can strengthen the volatilization, smelting and oxidation effects, effectively improve the productivity, reduce the energy consumption, improve the economic and technical indexes and reduce the production cost.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects existing in the prior art, the utility model provides an antimony ore bottom-blowing and top-blowing mixed bath smelting converter.

In order to achieve the above object, the utility model adopts the following technical scheme: the furnace body comprises a horizontal cylindrical furnace body, the furnace body comprises a furnace body shell and a furnace chamber arranged in the furnace body shell, refractory materials are arranged between the furnace body shell and the furnace chamber, one end of the furnace body shell is provided with a walking gear for controlling rotation, the other end of the furnace body shell is provided with a driven rotating gear, a feeding port is arranged on one side surface or one end surface of the furnace body shell, an exhaust port is arranged on the other end surface of the furnace body shell and is in non-contact connection with a flue, one or more bottom blowing holes and one or more top blowing jacks are respectively arranged on the furnace body shell, and the bottom blowing holes and the top blowing jacks respectively penetrate through the furnace body shell and the refractory materials.

Furthermore, the diameter of the furnace body shell is 1-100 meters, the length is 1-100 meters, the wall thickness of the shell is 0.005-1 meter, and the furnace body shell is made of steel, iron or stainless steel or copper.

Furthermore, the thickness of the refractory material layer is 0.001-5 m, the refractory material is made of high-alumina or high-silica or high-magnesium, and the refractory material can be made of shaped bricks or made of unshaped bulk material by ramming.

Furthermore, the bottom blowing air eye is in a shape of a straight cylinder, a conical cylinder or a cuboid, the bottom blowing air eye is made of steel or iron or stainless steel or copper, the transverse section specification of the bottom blowing air eye is 10-1000 mm, the included angle between the air inlet angle arranged by the bottom blowing air eye and the outer shell surface of the furnace body is 0-90 degrees, and the plurality of bottom blowing air eyes are arranged in a single transverse arrangement or a single longitudinal arrangement or a transverse longitudinal combination arrangement.

Furthermore, the top-blowing jack is in a shape of a straight cylinder, a conical cylinder or a cuboid, the top-blowing jack is made of steel, iron, cast iron, stainless steel, copper or refractory materials, the transverse section specification of the top-blowing jack is 10-1000 mm, the included angle between the air inlet angle arranged on the top-blowing jack and the outer shell surface of the cylinder furnace body is 0-90 degrees, and the top-blowing jacks are arranged in a single transverse arrangement mode or a single longitudinal arrangement mode or a transverse longitudinal combination arrangement mode.

The top-blowing air pipe is inserted into the furnace chamber and supplies air to the top-blowing of the melt in the molten bath, the top-blowing air pipe is in a straight cylinder shape, a conical cylinder shape or a rectangular shape, the top-blowing air pipe is made of iron steel, cast iron, stainless steel, copper or refractory material, the transverse section specification of the top-blowing air pipe is 10-1000 mm, and the air inlet angle formed by installing the top-blowing air pipe and the included angle between the outer shell surface of the cylinder furnace body are 0-90 DEG

The utility model discloses following beneficial effect has: the technical scheme of the utility model can improve the productivity effectively, reduce the energy consumption, improve economic technology index, reduction in production cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the utility model comprises a horizontal cylindrical furnace body shell 1, a refractory material layer 2 is built in the shell, and the cylindrical furnace body shell and the refractory material layer form a furnace chamber 3; one end of the furnace body shell 1 is provided with a walking gear 4, and the other end is provided with a driven rotating gear 5; an opening is arranged on one end surface of the furnace body shell 1 and is in non-contact connection with the flue 6, and an opening is arranged on the other end surface of the furnace body shell 1 and is used for placing a feeding hopper 7 and a fuel pipe 8; the furnace body shell 1 is provided with 5 bottom blowing air holes 9 which are connected with a bottom blowing main air pipe 11 through a first connecting hose 10; 2 top-blowing jacks are arranged on the cylindrical furnace body shell, two top-blowing air pipes 12 are inserted into the furnace chamber 3 through the top-blowing jacks, and the top-blowing air pipes are connected with a top-blowing main air pipe 14 through a second connecting hose 13; the bottom of the furnace chamber 3 is provided with a molten pool 15.

During production, furnace burden such as mineral material flux is crushed to the required granularity and then is directly added into a blast-boiling melt pool 15 in a cylindrical furnace body furnace chamber 3 through a feeding hopper 7, liquid fuel is sprayed into the furnace chamber 3 through a fuel pipe 8 for supplying heat, air or oxygen-enriched air or pure oxygen is blown into the furnace melt in a bottom blowing mode through a bottom blowing air hole 9 arranged on a furnace body shell, the added furnace burden is wrapped and stirred by gas turbulence in a molten pool, heat transfer among gas, liquid and solid phases is rapidly completed, violent physical and chemical reactions are carried out, and the mineral material is simultaneously subjected to metallurgical processes such as heating, melting, oxidation, reduction, sulfonium making, slag making and the like in the molten pool; and at the same time of bottom blowing, the top blowing air pipe 12 for the top blowing jack arranged on the furnace body shell supplies oxidation to the top blowing air blast of the near liquid level of the melt in the furnace in a top blowing mode, accelerates the metallurgical reaction process and strengthens the volatilization smelting oxidation reaction effect of the antimony ore blast furnace. The produced slag is discharged to an external chute through a slag port at one end of the cylindrical furnace body and enters a slag pool, and the produced antimony matte is discharged to the external chute through an antimony matte port at one end of the cylindrical furnace body and enters the antimony matte pool.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides an antimony ore bottom-blowing top-blowing mixed molten pool smelts converter, includes horizontal cylindric furnace body, the furnace body includes the furnace body shell and locates the furnace chamber in the furnace body shell, be equipped with refractory material between furnace body shell and the furnace chamber, furnace body shell one end is equipped with control pivoted walking gear, and the other end is equipped with driven rotating gear, furnace body shell side or a terminal surface are provided with the dog-house, and another terminal surface is provided with the exhaust port, and the exhaust port is connected its characterized in that with flue non-contact: the furnace body shell is respectively provided with one or more bottom blowing holes and one or more top blowing jacks, and the bottom blowing holes and the top blowing jacks respectively penetrate through the furnace body shell and the refractory material to be communicated with the furnace cavity.

2. The antimony ore bottom-blowing and top-blowing mixed bath smelting converter according to claim 1, wherein the diameter of the furnace body shell is 1-100 meters, the length of the furnace body shell is 1-100 meters, the wall thickness of the shell is 0.005-1 meter, and the furnace body shell is made of steel or stainless steel or copper.

3. The antimony ore bottom-blowing and top-blowing mixed bath smelting converter according to claim 1, wherein the thickness of the refractory layer is 0.001 m to 5 m, the refractory material is made of high-alumina or high-siliceous or high-magnesia, and the refractory material can be made of brick blocks of definite shapes or rammed bulk materials of indefinite shapes.

4. The antimony ore bottom-blowing and top-blowing mixed bath smelting converter according to claim 1, wherein the bottom-blowing air eye is in a shape of a straight cylinder, a conical cylinder or a cuboid, the bottom-blowing air eye is made of steel or stainless steel or copper, the transverse section of the bottom-blowing air eye is 10 mm to 1000 mm, an air inlet angle formed by installing the bottom-blowing air eye and the outer shell surface of the converter body is 0-90 degrees, and the plurality of bottom-blowing air eyes are arranged in a single transverse arrangement or a single longitudinal arrangement or a transverse longitudinal combination arrangement.

5. The antimony ore bottom-blowing and top-blowing mixed bath smelting converter according to claim 1, wherein the top-blowing jacks are straight cylinders, conical cylinders and rectangular solids, the top-blowing jacks are made of steel, cast iron, stainless steel, copper or refractory materials, the transverse section of the top-blowing jacks is 10-1000 mm in specification, the included angle between the air inlet angle arranged in the top-blowing jacks and the outer shell surface of the cylindrical furnace body is 0-90 degrees, and the top-blowing jacks are arranged in a single transverse arrangement or a single longitudinal arrangement or a transverse longitudinal combination arrangement.

6. The antimony ore bottom-blowing and top-blowing mixed bath smelting converter according to claim 1, further comprising a top-blowing air pipe inserted into the furnace chamber and supplying air to the top-blowing of the melt in the bath, wherein the top-blowing air pipe is in a shape of a straight cylinder, a conical cylinder or a cuboid, the top-blowing air pipe is made of steel, cast iron, stainless steel, copper or refractory materials, the transverse section of the top-blowing air pipe is 10 mm to 1000 mm, and an air inlet angle formed by the top-blowing air pipe and the outer shell surface of the cylindrical furnace body form an included angle of 0 ° to 90 °.