CN1715818A - Fixed copper anode furnace bottom air blower and its process - Google Patents

Fixed copper anode furnace bottom air blower and its process Download PDF

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Publication number
CN1715818A
CN1715818A CNA2005100408327A CN200510040832A CN1715818A CN 1715818 A CN1715818 A CN 1715818A CN A2005100408327 A CNA2005100408327 A CN A2005100408327A CN 200510040832 A CN200510040832 A CN 200510040832A CN 1715818 A CN1715818 A CN 1715818A
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CN
China
Prior art keywords
blowing
copper
anode furnace
gas
copper anode
Prior art date
Application number
CNA2005100408327A
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Chinese (zh)
Inventor
乐可襄
尹振兴
Original Assignee
安徽工业大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 安徽工业大学 filed Critical 安徽工业大学
Priority to CNA2005100408327A priority Critical patent/CN1715818A/en
Publication of CN1715818A publication Critical patent/CN1715818A/en

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Abstract

The present invention belongs to the field of copper smelting technology, and is especially one bottom blowing device for copper anode furnace. The bottom blowing device includes 2 or 3 bottom blowing elements arranged symmetrically around the longitudinal center line and connected to the air source. In the pipeline from the air source to the bottom blowing elements, there are air source switcher, compressor, flow meter, pressure meter and valve connected successively. Air is supplied to the copper anode furnace continuously in the amount regulated based on different smelting stages. The device and the technological process of the present invention has shortened smelting period, lowered fuel and reductant consumption, raised anode plate quality and high production efficiency.

Description

Fixed copper anode furnace bottom air blower and technology thereof
Technical field:
The invention belongs to the technical field of smelting of copper, be specifically related to a kind of fixed copper anode furnace bottom air blower and technology thereof.
Background technology:
Copper anode furnace is an important smelting equipment of smelting cathode copper, is important link in the refining cathode copper technical process.Copper concentrate powder generally passes through reverberatory furnace, converter, anode furnace, four technical process of electrolysis.The history that arranged with fixed anode furnace decades.Though state-of-the-art technology is to adopt rotary furnace, a large amount of uses at present remain fixed anode furnace.The shortcoming of this stove maximum is that reaction speed is slow, the duration of heat is long, and main cause is that its burner hearth area is big, and there is certain degree of depth in the molten bath, heating, oxidation, reduction that this stage smelting is carried out can only be carried out on the face of molten bath basically, and the reaction speed in whole molten bath is restricted.
Summary of the invention:
The present invention is directed to present fixed copper anode stove and exist reaction speed slow, the weak point that the duration of heat is long provides a kind of fixed copper anode furnace bottom air blower and technology thereof.
Fixed copper anode furnace bottom air blower provided by the present invention, comprise 2-3 bottom blowing element, source of the gas, compressor, valve, Pressure gauge, flowmeter, valve etc., bottom blowing element is installed on the copper anode furnace furnace bottom longitudinal centre line and symmetrical equilibrium is arranged, the bottom blowing element middle part is that internal diameter is the steel pipe about 1cm-2cm, be connected with source of the gas, in the middle of source of the gas arrives the pipeline of bottom blowing element, the source of the gas switching device shifter that has been linked in sequence, compressor, flowmeter, Pressure gauge, valve.
Bottom blowing element is diffusion-type air brick or fine steel tube porous plug formula air supply device.Source of the gas is argon gas or nitrogen, and purity requirement is more than 99%, and sulfur content is handled through purge drying less than 0.5%.
The technology of implementing fixed copper anode furnace bottom air blower is as follows: gone out at a last stove copper, during whole copper, keep the intermediate flow of flow 25-30L/min to blow, the liquid matte of packing copper scrap then into or bessemerizing out, blow to using between the charged having gone out copper than low discharge 10-15L/min, intermediate flow with 25-30L/min in fusion process is blown, enter the period of heating and the heat of oxidation after having melted, reduction period, blow with intermediate flow the heat of oxidation in this three phases, the period of heating, reduction period is blown with maximum stream flow 50L/min, after this enter the copper stage, bottom blowing atmospheric pressure: 1.603Mpa-11.03Mpa.
On the longitudinal centre line of copper anode furnace bottom, 2-3 bottom blowing device is installed.Install 2 still 3 decide on the heat size size.The position that bottom blowing element is arranged at furnace bottom is seen shown in the accompanying drawing 2, is to be in local geometric center position basically.Need build the passage of wide 1 meter, a high 1.8m rice in stove bottom, be used for arranging gassing pipe, instrument, stay the operating space of changing blowning installation.
Bottom blowing element and anode furnace annexation.Open 2-3 the hole that bottom blowing element is installed at the bottom of anode furnace, its internal diameter size just in time is complementary through size with the outer of bottom blowing element.Brick cup of bottom blowing element overcoat (or claim sleeve brick), this brick cup with quality preferably refractory material manufacture.Build by laying bricks or stones by normal block stove mode around the brick cup and brick cup bottom.After bottom blowing element is installed to the normal position, tight by the steel deck-plate lid of furnace shell bottom, use bolting.The bottom blowing element middle part is that internal diameter is the steel pipe about 1cm-2cm, is connected with source of the gas, and in the middle of source of the gas arrives the pipeline of bottom blowing element, the source of the gas switching device shifter that has been linked in sequence, compressor, flowmeter, Pressure gauge, valve etc., its annexation is seen Fig. 3.Wherein the source of the gas switching device shifter is to switch with argon gas or nitrogen according to smelting different phase; Compressor is used for improving the pressure of gas, to meet the requirement of bottom blowing.
The operating pressure of bottom blowing gas is doubly determined pressure: 1.603Mpa-16.03Mpa (2.0-16 atmospheric pressure) with the 1.2-1.3 of actual pressure.Actual pressure comprises: atmospheric pressure, the pressure that the copper liquid degree of depth is determined, the pressure loss that bottom blowing gas element resistance causes.
Determining of bottom blowing throughput.(1) heat temperature raising phase (forming condition): maximum stream flow so that the molten bath to be arranged; (2) heat of oxidation: with intermediate flow, i.e. the 50%-60% of maximum stream flow; (3) reduction period: maximum stream flow; (4) the copper phase: intermediate flow; (5) empty stove: minimum discharge.Bottom blowing gas must be noted that in whole smelting process when using and all will ventilate, even when empty stove, still will ventilate in stove with less flow, to guarantee that bottom blowing element is unimpeded.
Adopt fixed copper anode furnace bottom air blower provided by the present invention and technology thereof, copper liquid in the whole fixed copper anode stove molten bath is among the benign cycle motion, shorten copper anode furnace duration of heat, fuel, reducing agent unit consumption reduce, form under the condition of good circulation in the molten bath simultaneously, can make the temperature and the composition of copper liquid in the molten bath even, improve the quality of positive plate.
Description of drawings
Fig. 1 fixed copper anode stove is installed the bottom blowing element connection diagram
Fig. 2 installs 2 bottom blowing nozzle location schematic diagrames
The annexation schematic diagram of Fig. 3 air feed equipment
Among the figure, 1, bottom blowing element, 2, brick cup (sleeve brick), 3, working lining brick, 4, permanent layer, 5, heat insulation layer, 6, air chamber, 7, fastener.8, argon gas, 9, nitrogen, 10, switching device shifter, 11, pipeline, 12, compressor, 13, flowmeter 14, Pressure gauge, 15, valve.
The specific embodiment
40 tons of copper anode furnaces, the dark 1000mm in molten bath.Blowning installation is installed 2 blowning installations at the bottom of the copper anode furnace, the position is on the copper anode furnace longitudinal centre line, and symmetrical equilibrium is arranged; Bottom blowing gas element adopts fine steel tube porous plug formula air supply device.
The heat temperature raising phase (forming condition) so that the molten bath to be arranged, nitrogen blowing maximum stream flow, 50L/min, pressure: 12.03Mpa (12 atmospheric pressure); Time 60-90min.
The heat of oxidation, nitrogen blowing intermediate flow, 30L/min, pressure: 12.03Mpa (12 atmospheric pressure), time: 60-90min.
Reduction period: blowing argon gas maximum stream flow, 50L/min, pressure: 12.03Mpa (12 atmospheric pressure); Time 50-70min.
The copper phase: blowing argon gas intermediate flow, 30L/min, pressure: 12.03Mpa (12 atmospheric pressure).
The empty campaign: nitrogen blowing minimum discharge, 10L/min, pressure: 2.03Mpa (2 atmospheric pressure).
The solid copper scrap of packing into later on, heating enters next campaign, just adopts the nitrogen flushing flow and the pressure of " heat temperature raising phase " behind beginning shape molten bath.

Claims (4)

1, fixed copper anode furnace bottom air blower, this device comprises 2-3 bottom blowing element, source of the gas, compressor, valve, Pressure gauge, flowmeter, valve etc., it is characterized in that: bottom blowing element is installed on the copper anode furnace furnace bottom longitudinal centre line and symmetrical equilibrium is arranged, the bottom blowing element middle part is that internal diameter is the steel pipe about 1cm-2cm, be connected with source of the gas, in the middle of source of the gas arrives the pipeline of bottom blowing element, the source of the gas switching device shifter that has been linked in sequence, compressor, flowmeter, Pressure gauge, valve.
2, fixed copper anode furnace bottom air blower according to claim 1 is characterized in that described bottom blowing element is diffusion-type air brick or fine steel tube porous plug formula air supply device.
3, fixed copper anode furnace bottom air blower according to claim 1 is characterized in that described source of the gas is argon gas or nitrogen, and purity requirement is more than 99%, and sulfur content is handled through purge drying less than 0.5%.
4, implement the technology of the described fixed copper anode furnace bottom air blower of claim 1, it is characterized in that this technology is as follows: gone out at a last stove copper, during whole copper, keep the intermediate flow of flow 25-30L/min to blow, the liquid matte of packing copper scrap then into or bessemerizing out, blow to using between the charged having gone out copper than low discharge 10-15L/min, intermediate flow with 25-30L/min in fusion process is blown, enter the period of heating and the heat of oxidation after having melted, reduction period, blow with intermediate flow the heat of oxidation in this three phases, the period of heating, reduction period is blown with maximum stream flow 50L/min, after this enter the copper stage, bottom blowing atmospheric pressure: 1.603Mpa-11.03Mpa.
CNA2005100408327A 2005-06-30 2005-06-30 Fixed copper anode furnace bottom air blower and its process CN1715818A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2005100408327A CN1715818A (en) 2005-06-30 2005-06-30 Fixed copper anode furnace bottom air blower and its process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2005100408327A CN1715818A (en) 2005-06-30 2005-06-30 Fixed copper anode furnace bottom air blower and its process

Publications (1)

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CN1715818A true CN1715818A (en) 2006-01-04

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101165196B (en) * 2006-10-19 2010-12-08 中国恩菲工程技术有限公司 Technique for continuously smelting copper by employing oxygen bottom converter and device thereof
CN103937993A (en) * 2014-04-01 2014-07-23 梧州漓佳铜棒有限公司 Tilting type anode furnace nitrogen gas stirring device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101165196B (en) * 2006-10-19 2010-12-08 中国恩菲工程技术有限公司 Technique for continuously smelting copper by employing oxygen bottom converter and device thereof
CN103937993A (en) * 2014-04-01 2014-07-23 梧州漓佳铜棒有限公司 Tilting type anode furnace nitrogen gas stirring device

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