CN103834818A - Oxygen adding system and method for reactor iron removing - Google Patents
Oxygen adding system and method for reactor iron removing Download PDFInfo
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- CN103834818A CN103834818A CN201410096799.9A CN201410096799A CN103834818A CN 103834818 A CN103834818 A CN 103834818A CN 201410096799 A CN201410096799 A CN 201410096799A CN 103834818 A CN103834818 A CN 103834818A
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Abstract
The invention belongs to the technical field of wet metallurgy, and in particular relates to an oxygen adding system and method for reactor iron removing. The system comprises a reactor provided with at least one stirring device (7), and further comprises an oxygen adding pipe (2), a steam adding pipe (8) and a plurality of mixed gas adding pipes (11), the oxygen adding pipe (2) is provided with a plurality of oxygen branched pipes (9), the steam adding pipe (8) is provided with a plurality of steam branched pipes (10), wherein any one of the oxygen branched pipes (9) is communicated with any one of the mixed gas adding pipe (11) after being communicated with one steam branched pipe (10). The oxygen is fixedly mixed with the high-pressure steam, and then added in the reactor from many points, the uniform adding of the oxygen can be realized to benefit the operation of the iron-removing reaction, and meanwhile, the problem of the oxygen adding pipe blocking in the prior art is solved.
Description
Technical field
The invention belongs to technical field of wet metallurgy, be specifically related to a kind of oxygen for reactor deironing and add system and method.
Background technology
Deironing is the important topic that wet method zinc is smelted, wet method zinc smelt in roasting, leaching, purification, electrodeposition and founding basic identical, unique difference is to adopt different method for removing iron and produced various wet method zinc smelting technology flow processs.Wet method zinc is smelted deferrization process can be summarized as two large classes: a class is the pyrogenic attack leached mud technique take conventional method as representative, this method feature is only produced a kind of waste (iron content), solidifies slag venting with pyrogenic process, and waste is convenient to store up and sell, but exist, zinc leaching rate is low, energy consumption is large, low concentration SO
2flue gas such as need process at the problem, the another kind of wet processing leached mud technique (jarosite process, goethite process, hematite process) take the high acid system of high temperature as representative, this method feature is to produce two kinds of wastes, one is from leaching the high slag that soaks of underflow output, another kind is deironing output scum from supernatant liquor, owing to being that wet method slag needs special slag field to store up, unfavorable to environmental protection.
Hematite process in the high acid system of high temperature has high-efficient deferrization feature, the scum that produces can be sold to Steel Plant and cement mill as comprehensive utilization of resources, the zinc factory of the world's unique employing hematite process deferrization process is Japanese Iijima smeltery at present, this factory's zinc ore concentrate is through roasting, adopt neutral leaching and low Ore Leaching, in soak supernatant liquor and send purification, electrodeposition and founding to produce zinc ingot metal, low acid sludge is through SO
2pressure leaching, output leached mud is plumbous as reclaiming, the raw material of silver, copper, leach supernatant liquor through in two sections of Wingdales and after, under high-temperature and high-pressure conditions, oxidation of divalent iron ion in infusion solution is formed to rhombohedral iron ore and deironing.In rhombohedral iron ore iron removal, oxygen is to cause the important factor of closing, but (200 ℃ of temperature under reactor high temperature condition of high voltage, pressure 1800KPa), the lower approximately 200～300KPa of requisite oxygen dividing potential drop, therefore add the method for oxygen to determine that can rhombohedral iron ore iron removal continuous and stable production toward reactor, in high-temperature high-voltage reaction device, directly add oxygen, because oxygen partial pressure is low, needed amount of oxygen is little, often cause the rhombohedral iron ore slag that the oxygen mouth of pipe is generated to stop up, reactor is forced to stop production maintenance cleaning fouling, Iijima smeltery of Japan is for this reason at the front end of reactor, the vertical reactor that is specially provided with two small volumes adds oxygen (see figure 2), one of them is for subsequent use, after a vertical reactor oxygen mouth of pipe stops up, be transformed into vertical reactor for subsequent use to maintain normal production, although the method for this employing repair and maintenance reactor can maintain production process, but do not solve the root problem that the oxygen mouth of pipe stops up, reactor repair and maintenance snaking workload is large, production cost is high, production efficiency is low.
Summary of the invention
Stop up for the oxygen mouth of pipe in prior art, and oxygen adds inhomogeneous problem, the present invention aims to provide for the oxygen of reactor deironing and adds system and method, and this system and method can effectively solve above technical problem.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of oxygen for reactor deironing adds system, comprise be provided with at least one whipping appts reactor, be connected to liquid before the deironing of one end of reactor and add pipe and be connected to the deironing of the other end of reactor after liquid outlet pipe, it is characterized in that, also comprise that oxygen adds pipe, steam to add pipe and multiple mixed gas to add pipe; Described multiple mixed gas adds pipe to be evenly arranged on the top of reactor, and described mixed gas adds the upper end of pipe to be positioned at reactor outside, and mixed gas adds the lower end of pipe to be positioned at inside reactor, and is positioned at the above position of liquid level; Described oxygen adds pipe to be provided with multiple oxygen and is in charge of, and described steam adds pipe to be provided with multiple steam and is in charge of, and wherein any one oxygen is in charge of with after a steam is in charge of and is communicated with between two, then adds pipe to be connected with any one mixed gas.
Preferably, described oxygen is in charge of and is provided with oxygen regulating valve, and described steam is in charge of and is provided with steam regulating valve, and described mixed gas adds pipe to be provided with gas check valve.
Preferably, before described deironing, liquid adds pipe to be provided with liquid vacuum breaker.
Further preferably, before described deironing, liquid adds pipe to be provided with feed valve, and after described deironing, liquid outlet pipe is provided with blow-off valve, and described mixed gas adds pipe to be provided with intake valve, and described intake valve is positioned at the lower end of gas check valve.
Oxygen for reactor deironing adds a method, uses above-mentioned oxygen to add system, and concrete steps are:
1) first open blow-off valve, then open feed valve, by liquid before deironing by deironing before liquid add pipe to pump into reactor;
2) open oxygen regulating valve, open steam regulating valve, pass into more than 98% oxygen of concentration, pass into high pressure steam simultaneously, steam enters reactor after fully mixing with oxygen, controlling reactor temperature is 190 ℃-210 ℃, and stagnation pressure is 1800KPa, and wherein oxygen partial pressure is 200 KPa～300KPa;
3) liquid enters after reactor before deironing, and under the condition of step 2, iron enters in slag with hematite precipitation, after deironing liquid by deironing after the outflow of liquid outlet pipe.
The present invention will be further explained below:
Rhombohedral iron ore deferrization process requires reactor high temperature condition of high voltage, but needed oxygen partial pressure is low, amount of oxygen is little, processing requirement can add oxygen by each single chamber multiple spot in reactor simultaneously, make oxygen fully mix to reach de-ferrous effect with solution, the present invention does not adopt the method for repair and maintenance reactor, but adopts the method that prevents that the oxygen mouth of pipe from stopping up, according to rhombohedral iron ore deferrization process feature, technical solution of the present invention is as follows:
1) cancel the oxygen hose that directly adds reactor;
2) by oxygen hose and vapour pipe reactor is outside connect after, and become a pipeline to enter reactor;
3) by the oxygen and the vapour pipe that merge, enter reactor downwards from reactor top;
4) oxygen flow and steam flow are in the variable valve control of reactor outside, and adjust flux mixes.
Compared with prior art, advantage of the present invention is:
1) because oxygen partial pressure is low and amount of oxygen is little, and concentrate on the mouth of pipe, the rhombohedral iron ore slag that the oxygen mouth of pipe is very easily generated in reactor stops up, and cancels the oxygen hose that directly adds reactor, has eliminated the root that the reactor oxygen mouth of pipe stops up.
2) utilize quantity of steam large, the feature that amount of oxygen is little, in reactor outside, vapour pipe and oxygen hose are merged into a pipeline and enter reactor, utilize the oxygen of the entrainment with steam low discharge of large flow to enter reactor, because the mouth of pipe has the steam of large flow, be equivalent to reduce mouth of pipe oxygen dense, in reactor, the mouth of pipe should not generate rhombohedral iron ore slag, while quantity of steam is large and temperature is high, the rhombohedral iron ore slag of the mouth of pipe can be washed away totally, can solve reactor and add oxygen to stop up the problem of the mouth of pipe.
3) at reactor outside regulating and controlling oxygen and steam flow separately, easy to adjust, mix full and uniform.
4) the present invention program can realize the requirement that in reactor each single chamber Multipoint Uniform adds oxygen, to reach best de-ferrous effect.
5) the present invention program does not adopt stop production to overhaul to safeguard the method for snaking reactor, can guarantee the continuous and stable production of reactor.
Accompanying drawing explanation
Fig. 1 is that the application's the oxygen for reactor deironing adds system annexation schematic diagram.
Fig. 2 is the equipment connecting relation schematic diagram of Japanese Iijima smeltery in prior art.
Wherein, the 1st, before deironing, liquid adds pipe, and the 2nd, oxygen adds pipe, and the 3rd, vertical reactor, the 4th, reactor feeding pipe, the 5th, liquid outlet pipe after deironing, the 6th, reactor, the 7th, whipping appts, the 8th, steam adds pipe, and the 9th, oxygen is in charge of, and the 10th, steam is in charge of, and the 11st, mixed gas adds pipe; F1 is blow-off valve, and F2 is feed valve, and F3 is intake valve, and F4 is oxygen regulating valve, and F5 is steam regulating valve, and Z1 is gas check valve, and Z2 is liquid vacuum breaker.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
Oxygen for reactor deironing adds a system, comprise be provided with at least one whipping appts 7 reactor 6, be connected to liquid before the deironing of one end of reactor 6 and add pipe 1 and be connected to the deironing of the other end of reactor 6 after liquid outlet pipe 5; Also comprise that oxygen adds pipe 2, steam to add pipe 8 and multiple mixed gas to add pipe 11; Described multiple mixed gas adds pipe 11 to be evenly arranged on the top of reactor 6, and described mixed gas adds the upper end of pipe 11 to be positioned at reactor 6 outsides, and mixed gas adds the lower end of pipe 11 to be positioned at reactor 6 inside, and is positioned at the above position of liquid level; Described oxygen adds pipe 2 to be provided with multiple oxygen and to be in charge of 9, and described steam adds pipe 8 to be provided with multiple steam and is in charge of 10, wherein any one oxygen be in charge of 9 with a steam be in charge of 10 be communicated with between two after, then add and manage 11 and be connected with any one mixed gas.
Described oxygen is in charge of 9 and is provided with oxygen regulating valve F4, and described steam is in charge of 10 and is provided with steam regulating valve F5, and described mixed gas adds pipe 11 to be provided with gas check valve Z1.Before described deironing, liquid adds pipe 1 to be provided with liquid vacuum breaker Z2.Before described deironing, liquid adds pipe 1 to be provided with feed valve F2, and after described deironing, liquid outlet pipe 5 is provided with blow-off valve F1, and described mixed gas adds pipe 11 to be provided with intake valve F3, and described intake valve F3 is positioned at the lower end of gas check valve Z2.
Oxygen for reactor deironing adds a method, uses oxygen described in embodiment 1 to add system, and concrete steps are:
1) first open blow-off valve F1, then open feed valve F2, by liquid before deironing by deironing before liquid add pipe 1 to pump into reactor 6;
2) open oxygen regulating valve F4, open steam regulating valve F5, pass into more than 98% oxygen of concentration, pass into high pressure steam simultaneously, steam enters reactor 6 after fully mixing with oxygen, controlling reactor temperature is 190 ℃-210 ℃, and stagnation pressure is 1800KPa, and wherein oxygen partial pressure is 200 KPa～300KPa;
3) liquid enters after reactor 6 before deironing, and under the condition of step 2, iron enters in slag with hematite precipitation, after deironing liquid by deironing after liquid outlet pipe 5 flow out.After deironing, liquid, by after flash drum decrease temperature and pressure, send deironing thickener to separate, and dense supernatant liquor returns to neutral leaching, and thickened underflow is scum through press filtration washing.
Liquid is approximately containing Fe25g/l before the present invention program's deironing, can obtain deironing after liquid containing Fe<2g/l, de-ironing efficiency is high, after deironing, liquid iron content is low, can directly return to neutral leaching, normal production status that can stabilising system.The present invention program's scum is containing Zn<1%, and zinc loss is little, and zinc recovery is high.The present invention program's scum is containing Fe50～60%, and scum is Wai Shou Steel Plant or cement mill directly, and comprehensive utilization of resources is good, and scum does not need slag field to store up, and meets the environmental requirement of increasingly stringent.
Claims (5)
1. the oxygen for reactor deironing adds system, comprise be provided with at least one whipping appts (7) reactor (6), be connected to liquid before the deironing of one end of reactor (6) and add pipe (1) and be connected to the deironing of the other end of reactor (6) after liquid outlet pipe (5), it is characterized in that, also comprise that oxygen adds pipe (2), steam to add pipe (8) and multiple mixed gas to add pipe (11); Described multiple mixed gas adds pipe (11) to be evenly arranged on the top of reactor (6), described mixed gas adds the upper end of pipe (11) to be positioned at reactor (6) outside, mixed gas adds the lower end of pipe (11) to be positioned at reactor (6) inside, and is positioned at the above position of liquid level; Described oxygen adds pipe (2) to be provided with multiple oxygen and is in charge of (9), described steam adds pipe (8) to be provided with multiple steam and is in charge of (10), after wherein any one oxygen is in charge of (9) and a steam and is in charge of (10) and is communicated with between two, then add pipe (11) to be connected with any one mixed gas.
2. add system for the oxygen of reactor deironing according to claim 1, it is characterized in that, described oxygen is in charge of (9) and is provided with oxygen regulating valve (F4), described steam is in charge of (10) and is provided with steam regulating valve (F5), and described mixed gas adds pipe (11) to be provided with gas check valve (Z1).
3. according to adding system for the oxygen of reactor deironing described in claim 1 or 2, it is characterized in that, before described deironing, liquid adds pipe (1) to be provided with liquid vacuum breaker (Z2).
4. according to adding system for the oxygen of reactor deironing described in claim 1 or 2, it is characterized in that, before described deironing, liquid adds pipe (1) to be provided with feed valve (F2), after described deironing, liquid outlet pipe (5) is provided with blow-off valve (F1), described mixed gas adds pipe (11) to be provided with intake valve (F3), and described intake valve (F3) is positioned at the lower end of gas check valve (Z2).
5. add a method for the oxygen of reactor deironing, it is characterized in that, right to use requires one of 1-4 described oxygen to add system, and concrete steps are:
1) first open blow-off valve (F1), then open feed valve (F2), by liquid before deironing by deironing before liquid add pipe (1) to pump into reactor (6);
2) open oxygen regulating valve (F4), open steam regulating valve (F5), pass into more than 98% oxygen of concentration, pass into high pressure steam simultaneously, steam enters reactor (6) after fully mixing with oxygen, controlling reactor temperature is 190 ℃-210 ℃, and stagnation pressure is 1800KPa, and wherein oxygen partial pressure is 200 KPa～300KPa;
3) liquid enters after reactor (6) before deironing, and under the condition of step (2), iron enters in slag with hematite precipitation, after deironing liquid by deironing after liquid outlet pipe (5) outflow.
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| CN201410096799.9A CN103834818B (en) | 2014-03-17 | 2014-03-17 | Oxygen adding system and method for reactor iron removing |
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| CN201410096799.9A CN103834818B (en) | 2014-03-17 | 2014-03-17 | Oxygen adding system and method for reactor iron removing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104962740A (en) * | 2015-07-15 | 2015-10-07 | 长沙有色冶金设计研究院有限公司 | Method for preventing deposition and scaling of hematite iron removal reactor |
| CN108728667A (en) * | 2018-05-29 | 2018-11-02 | 南丹县南方有色金属有限责任公司 | A kind of method that oxygen removes iron |
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| CN1400321A (en) * | 2002-05-29 | 2003-03-05 | 云南冶金集团总公司 | Zinc sulfide preparation concentrate compression leaching method |
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| CN103194599A (en) * | 2013-04-25 | 2013-07-10 | 大兴安岭云冶矿业开发有限公司 | Method for processing zinc sulfide concentrated ore |
| CN203728905U (en) * | 2014-03-17 | 2014-07-23 | 长沙有色冶金设计研究院有限公司 | Oxygen adding system for iron removal of reactor |
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2014
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1400321A (en) * | 2002-05-29 | 2003-03-05 | 云南冶金集团总公司 | Zinc sulfide preparation concentrate compression leaching method |
| CN201520792U (en) * | 2009-08-27 | 2010-07-07 | 浙江华友钴业股份有限公司 | Novel neutralized deironing equipment |
| CN201842875U (en) * | 2010-10-22 | 2011-05-25 | 蒙自矿冶有限责任公司 | High-efficiency air oxidation de-ironing device |
| CN102634662A (en) * | 2012-04-26 | 2012-08-15 | 浙江华友钴业股份有限公司 | Method for low-temperature deironing by using mixed gas of air and sulfur dioxide (SO2) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104962740A (en) * | 2015-07-15 | 2015-10-07 | 长沙有色冶金设计研究院有限公司 | Method for preventing deposition and scaling of hematite iron removal reactor |
| CN108728667A (en) * | 2018-05-29 | 2018-11-02 | 南丹县南方有色金属有限责任公司 | A kind of method that oxygen removes iron |
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| CN103834818B (en) | 2015-04-08 |
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