CN208853441U - A kind of aluminum electrolysis waste tank lining heap leaching treatment system - Google Patents

A kind of aluminum electrolysis waste tank lining heap leaching treatment system Download PDF

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Publication number
CN208853441U
CN208853441U CN201821514427.3U CN201821514427U CN208853441U CN 208853441 U CN208853441 U CN 208853441U CN 201821514427 U CN201821514427 U CN 201821514427U CN 208853441 U CN208853441 U CN 208853441U
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tank
leaching
liquid storage
storage tank
liquid
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杨万章
杨大锦
梁可
张燕
陈本松
黄志华
李云生
杨金星
江俊
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Yunnan Yunlv Ruixin Aluminum Co Ltd
Kunming Engineering and Research Institute of Nonferrous Metallurgy Co Ltd
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Yunnan Yunlv Ruixin Aluminum Co Ltd
Kunming Engineering and Research Institute of Nonferrous Metallurgy Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/20—Waste processing or separation

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Abstract

一种铝电解废槽衬堆浸处理系统，包括尾气处理系统(I)、预浸出系统(II)、浸出系统(III)、储液系统(IV)、氧化除氰及碳分‑中和系统(V)、预浸出液蒸发结晶系统(VI)。本实用新型可对废槽衬的价值成分进行有效的分离，将废槽衬进行无害化处理，实现高效的综合回收，且节能环保。

An aluminum electrolysis waste tank lining heap leaching treatment system, comprising a tail gas treatment system (I), a pre-leaching system (II), a leaching system (III), a liquid storage system (IV), an oxidative cyanide removal and a carbon neutralization system (V), pre-leaching liquid evaporation crystallization system (VI). The utility model can effectively separate the value components of the waste tank lining, perform harmless treatment on the waste tank lining, realize efficient comprehensive recovery, and save energy and protect the environment.

Description

A kind of aluminium electroloysis waste lining dump leaching processing system
Technical field
The utility model belongs to aluminium electroloysis waste lining processing system technical field.
Background technique
Waste lining is, due to the infiltration of high-temperature electrolysis confrontation Pot Lining, corrosion, to cause aluminium electric during aluminum electrolysis Solution Pot Lining structure is deformed, rupture, high temperature molten aluminum and electrolyte from the crack infiltration Pot Lining of these deformations and rupture, So as to cause electrolytic cell can not produce normally and stop generating when slot is repaired.Since slot liner material is sent out with electrolyte at high temperature for a long time Raw electrochemical reaction, has adsorbed a large amount of fluoride and a certain amount of harmful substance, while also generating some noxious materials, has become Its factor to cause damages when storing up to environment.General new aluminium cell just needs to stop groove overhaul after using 3~6 years.Therefore, Waste lining is that inevitably solid endangers waste to aluminum electrolysis in the process.How waste lining is subjected to harmless treatment, And while realizing waste lining maximum recovery value, accomplishes the efficient of process, energy-saving and environmental protection and recycle, become useless slot Serve as a contrast the key points and difficulties of processing.Existing waste lining processing method processing technological flow is long, and process is complicated, and investment is big, and to ring Cause secondary pollution in border.
Summary of the invention
It is right the purpose of the utility model is to provide a set of efficient, energy-saving and environmental protection aluminium electroloysis waste lining dump leaching processing system The value ingredient of waste lining is efficiently separated, and waste lining is carried out harmless treatment, realizes synthetical recovery.
The purpose of this utility model is achieved through the following technical solutions:
A kind of aluminium electroloysis waste lining dump leaching processing system, including exhaust treatment system, pre- leaching system, leaching system, storage Liquid system, oxidation are except cyanogen and carbon point-neutralized system, pre- leachate evaporation and crystallization system；
The exhaust treatment system includes that the one-stage water wash for the sequential communication being set to outside workshop washs tower, second level water washing Tower, level-one sulfuric acid scrubbing tower, second level sulfuric acid scrubbing tower；
The pre- leaching system include installation be erected in workshop closed pre- leaching tanks, be connected to closed pre- leaching tanks and go out The feeding chute of material mouth, the discharge door opened by electric drive hydraulic thruster control for being set to closed pre- leaching tanks discharge port, installation Belt conveyor above pre- leaching tanks, the feeding electric hoist being set to above belt conveyor, from closed pre- leaching groove top Portion is drawn and the tail gas absorption pipe passed to below closed pre- leaching tanks, the exhaust fan and connection tail that are connected on tail gas absorption pipe The offgas duct of gas blower；The rear end of offgas duct is connected to the air inlet that the one-stage water wash of exhaust treatment system washs tower；
The leaching system includes the leaching pond being located at below feeding chute discharge end constructed after digging pit on ground, structure It builds in the liquid chute for leaching transfer tank of the pond side position lower than leaching pond, being set to the leaching side pond Chu Liu；The leaching pond Bottom of pond is that bottom of pond is provided with steck shape groove to exit side gradually oblique slope, goes out stream side pool wall bottom leach pond Portion offers liquid outlet, and wall is erected in the external overflow for leading up to liquid chute of liquid outlet, and the lowest part of the steck shape groove goes out Mouth is communicated by underflow pipe with transfer tank, and the exit of steck shape groove is provided with valve, is laid in steck shape the top of the groove There is filter plate；It is connected with the vertical drainage tube for leading to underflow pipe in liquid chute bottom, transfer pump is provided with by transfer tank；
The liquid-storage system includes at least five liquid storage tank of sequence setting, and the bottom of pond of each liquid storage tank is ramp type Bottom of pond, one jiao of slope low side in bottom of pond is provided with recessed collecting tray, and one group of suction pump is each provided at each collecting tray； The liquid storage tank of sequence setting is followed successively by leachate liquid storage tank, a washing lotion liquid storage tank, two washing lotion liquid storage tanks, three washing lotion liquid storage tanks and four Washing lotion liquid storage tank, a washing lotion, two washing lotions, three washing lotions, four washing lotions for storing waste lining leachate respectively, washing leached mud, one Washing lotion liquid storage tank, two washing lotion liquid storage tanks, three washing lotion liquid storage tanks and four washing lotion liquid storage tanks collecting tray at be respectively arranged with and will clean Liquid pump send the liquid pushing tube and suction pump for being back to and leaching pond, transfers pump and washes the leachate for entering transfer tank in batches, a washing lotion, two Liquid, three washing lotions, four washing lotions are pumped to leachate liquid storage tank, a washing lotion liquid storage tank, two washing lotion liquid storage tanks, three washing lotion liquid storage tanks respectively With four washing lotion liquid storage tanks, it is provided at the collecting tray of leachate liquid storage tank and leachate is pumped to subsequent oxidation except cyanogen and carbon Point-neutralized system oxidation broken cyanide slot perfusion tube and infusion pump；
The oxidation includes the oxidation broken cyanide for being internally provided with oxidation broken cyanide agitating device except cyanogen and carbon point-neutralized system Slot, inside are equipped with carbon point-neutralization chamber agitating device 1# carbon point-neutralization chamber and 2# carbon point-neutralization chamber, aoxidize broken cyanide liquid liquid storage Pond, carbon point-neutralizer liquid storage tank, is set to carbon point-neutralizer storage at the 1# filter press being set to above oxidation broken cyanide liquid liquid storage tank 2# filter press above liquid pool；The 1# delivery pump that oxidation broken cyanide liquid is pumped to 1# filter press is provided with outside oxidation broken cyanide slot, It aoxidizes the gravity flow of broken cyanide pressing filtering liquid and enters oxidation broken cyanide liquid liquid storage tank storage, be provided with outside oxidation broken cyanide liquid liquid storage tank oxidation is broken Cyanogen pressing filtering liquid is pumped to 1# carbon point-neutralization chamber 2# delivery pump, be provided with outside 1# carbon point-neutralization chamber by a carbon point-and Liquid is pumped to the 3# delivery pump of 2# filter press, and a carbon point-neutralizes pressing filtering liquid gravity flow and enters carbon point-neutralizer liquid storage tank, in carbon - being provided with outside neutralizer liquid storage tank by a carbon point-is divided to neutralize pressing filtering liquid and be pumped to 2# carbon point-neutralization chamber 4# delivery pump, The 5# delivery pump that secondary carbon point-neutralizer is pumped to 2# filter press is provided with outside 2# carbon point-neutralization chamber, secondary carbon point-neutralizes Pressing filtering liquid gravity flow enters carbon point-neutralizer liquid storage tank.
Waste lining described in the utility model leaches pond and is set in workshop, and overhead traveling crane is provided at the top of workshop.The leaching Pond is set side by side with 2 or more, and a shared transfer tank is arranged on the outside of every two adjacent leaching pond intersection, respectively leaches pond It is connected to respectively by respective underflow pipe with transfer tank, the bottom bifurcated of the vertical drainage tube respectively leads to a foundation flow tube.
Aluminium electroloysis waste lining is removed cyanogen through pre- leaching, leaching, tail gas absorption, oxidation to the utility model and carbon divides-neutralizes, steams Crystallization treatment is sent out, the valuable constituent in waste lining is efficiently separated.The harmless carbon raw material of output, carbon stone after water logging Blackization degree is high, can be used as the raw material of aluminum electrolysis anode carbon block production, the harmless refractory material of output can make aluminium cell after water logging Impervious Materials ingredient reuse, can also take out brick field or cement plant.The ammonia generated is presoaked out through sulfuric acid absorption, produces byproduct Ammonium sulfate can be used as plant area and periphery greening fertilizer；Carbon point-neutralizes the filtrate generated, is handled using evaporation concentration equipment, The crystalline solid (sodium salt) produced can be used as the slagging agent ingredient of roasting and starting aluminum electrolytic cell material and molten aluminum founding, return to aluminium Electrolysis production uses, the filtrate aluminium hydroxide of filters pressing can export trade to alumina producing factory, the water for cleaning leached mud can recycle benefit With water-saving efficient.The utility model realizes continuous, automatic, the efficient harmless treatment of aluminium electroloysis waste lining, basic to realize Zero-emission, clean and environmental protection, and can increase Business Economic Benefit.
Detailed description of the invention
Fig. 1 is the plane figure schematic diagram of Tthe utility model system；
Fig. 2 is the front elevation of Fig. 1；
Fig. 3 is the left view elevation of the exhaust treatment system I and pre- leaching system II in Fig. 1；
Fig. 4 is the Section A-A figure in Fig. 2；
Fig. 5 is that oxidation removes cyanogen and carbon point-neutralized system V left view elevation in Fig. 1.
Each label is as follows in figure: I, exhaust treatment system, II, pre- leaching system, III, leaching system, IV, liquid-storage system, V, oxidation is except cyanogen and carbon point-neutralized system, VI, pre- leachate evaporation and crystallization system, 1, one-stage water wash wash tower, 2, second level water washing Tower, 3, level-one sulfuric acid scrubbing tower, 4, second level sulfuric acid scrubbing tower, 5, closed pre- leaching tanks, 6, electric drive hydraulic thruster, 7, blanking chute Slot, 8, exhaust fan, 9, offgas duct, 10, discharge door, 11, belt conveyor, 12, feeding electric hoist, 13, tail gas absorption pipe, 14, pond, 15, transfer tank, 16, liquid chute, 17, steck shape groove, 18, liquid outlet, 19, the perpendicular wall of overflow, 20, underflow are leached Pipe, 21, valve, 22, vertical drainage tube, 23, transfer pump, 24, collecting tray, 25, suction pump, 26a, leachate liquid storage tank, 26b, One washing lotion liquid storage tank, 26c, two washing lotion liquid storage tanks, tri- washing lotion liquid storage tank of 26d, 26e, four washing lotion liquid storage tanks, 27, overhead traveling crane, 28, send Liquid pipe, 29, infusion pump, 30, perfusion tube, 31, oxidation broken cyanide slot, 32, oxidation broken cyanide agitating device, 33,1# carbon point-neutralization chamber, 34, carbon point-neutralization chamber agitating device, 35,2# carbon point-neutralization chamber, 36, oxidation broken cyanide liquid liquid storage tank, 37,1# filter press, 38, carbon Point-neutralizer liquid storage tank, and 39,2# filter press, 40,1# delivery pump, 41,2# delivery pump, 42,3# delivery pump, 43,4# delivery pump, 44,5# delivery pump, 45, sulfuric acid storage pool.
Specific embodiment
Aluminium electroloysis waste lining dump leaching processing system as shown in Figure 1 and Figure 2, including exhaust treatment system I, pre- leaching system II, leaching system III, liquid-storage system IV, oxidation are except cyanogen and carbon point-neutralized system V, pre- leachate evaporation and crystallization system VI.For Expression is clearer, and the part leaching system III in Fig. 1 is not drawn into workshop and overhead traveling crane in Fig. 2.Pre- leaching system in Fig. 2 Unite II, leaching system III, liquid-storage system IV is schematically illustrated is the internal structure splitted.
As shown in Figure 1, Figure 3, the exhaust treatment system I includes that the one-stage water wash for the sequential communication being set to outside workshop is washed Tower 1, second level water wash column 2, level-one sulfuric acid scrubbing tower 3, second level sulfuric acid scrubbing tower 4.Mainly absorb the ammonia that pre- leaching section generates Gas (NH3), through two-stage sulfuric acid scrubbing system, produce ammonium sulfate, tail gas qualified discharge.
As shown in Figure 1, Figure 3, the pre- leaching system II includes installing the closed pre- leaching tanks 5 being erected in workshop, connecting It is connected to the feeding chute 7 of closed pre- leaching tanks discharge port, is set to being controlled by electric drive hydraulic thruster 6 for closed pre- leaching tanks discharge port Make the discharge door 10 opened, the belt conveyor 11 being installed on above pre- leaching tanks, the feeding being set to above belt conveyor Electric hoist 12, is connected to tail at the tail gas absorption pipe 13 drawn and passed to below closed pre- leaching tanks from closed pre- leaching groove top portion The offgas duct 9 of exhaust fan 8 and connection exhaust fan in aspiration closed tube；The one of the rear end of offgas duct 9 and exhaust treatment system The air inlet connection of grade water wash column 1.
As shown in Figure 1 and Figure 2, the leaching system III includes that the feeding chute 7 that is located at constructed after digging pit on ground goes out Expect the leaching pond 14 below end, construct to be lower than in leaching pond side position and leach the transfer tank 15 in pond, be set to the leaching side pond Chu Liu Liquid chute 16；The bottom of pond for leaching pond 14 is that bottom of pond is provided with steck shape to exit side gradually oblique slope Groove 17 offers liquid outlet 18, the external overflow for leading up to chute 16 of liquid outlet in the stream side pool wall bottom that goes out for leaching pond The lowest part outlet of perpendicular wall 19, the steck shape groove 17 is communicated by underflow pipe 20 with transfer tank 15, in steck shape groove Exit is provided with valve 21, is equipped with filter plate in steck shape the top of the groove；It is connected in 16 bottom of liquid chute and leads to bottom The vertical drainage tube 22 of flow tube 20 is provided with transfer pump 23 by transfer tank 15.The leaching pond 14 is usually set side by side with 2 More than, in order to have enough to meet the need production, a shared transfer tank 15 is set on the outside of every two adjacent leaching pond intersection, it is each to leach Pond passes through respective underflow pipe 20 respectively and is connected to transfer tank 15, the vertical drainage tube 22 as shown in figure 4, its bottom bifurcated, Respectively lead to a foundation flow tube.The leaching pond 14 is set in workshop, and overhead traveling crane 27 is provided at the top of workshop.
As shown in Figure 1 and Figure 2, the liquid-storage system IV includes at least five liquid storage tank of sequence setting, each liquid storage tank Bottom of pond be ramp type bottom of pond, one jiao of slope low side in bottom of pond is provided with recessed collecting tray 24, at each collecting tray It is each provided with one group of suction pump 25；The liquid storage tank of sequence setting is followed successively by leachate liquid storage tank 26a, a washing lotion liquid storage tank 26b, two Washing lotion liquid storage tank 26c, three washing lotion liquid storage tank 26d and four washing lotion liquid storage tank 26e store waste lining leachate respectively, washing is leached A washing lotion, two washing lotions, three washing lotions, four washing lotions of slag, in a washing lotion liquid storage tank 26b, two washing lotion liquid storage tank 26c, three washing lotion liquid storages It is respectively arranged at the collecting tray of pond 26d and four washing lotion liquid storage tank 26e and cleaning solution is pumped back into the liquid pushing tube for leaching pond 14 28 and suction pump 25, transferring pump 23 will be in batches into the leachate of transfer tank, a washing lotion, two washing lotions, three washing lotions, four washing lotions difference It is pumped to leachate liquid storage tank 26a, a washing lotion liquid storage tank 26b, two washing lotion liquid storage tank 26c, three washing lotion liquid storage tank 26d and four washing lotions Liquid storage tank 26e is provided at the collecting tray 24 of leachate liquid storage tank and leachate is pumped to subsequent oxidation except in cyanogen and carbon point- With the perfusion tube 30 and infusion pump 29 of the oxidation broken cyanide slot 31 of system.
As shown in Figure 1, shown in Figure 5, the oxidation removes cyanogen and carbon point-neutralized system V includes being internally provided with oxidation broken cyanide stirring The oxidation broken cyanide slot 31 of device 32, inside are equipped with carbon point-neutralization chamber agitating device 34 1# carbon point-neutralization chamber 33 and 2# carbon point- Neutralization chamber 35, oxidation broken cyanide liquid liquid storage tank 36, the 1# filter press 37 being set to above oxidation broken cyanide liquid liquid storage tank, carbon point-neutralize Liquid liquid storage tank 38, the 2# filter press 39 being set to above carbon point-neutralizer liquid storage tank；It is provided with outside oxidation broken cyanide slot 31 by oxygen Change the 1# delivery pump 40 that broken cyanide liquid is pumped to 1# filter press 37, oxidation broken cyanide pressing filtering liquid gravity flow enters oxidation broken cyanide liquid liquid storage tank 36 Storage, broken cyanide pressing filtering liquid will be aoxidized by, which being provided with outside oxidation broken cyanide liquid liquid storage tank, is pumped to the 2# conveying of 1# carbon point-neutralization chamber 33 Pump 41 is provided with the 3# delivery pump 42 that a carbon point-neutralizer is pumped to 2# filter press 39 outside 1# carbon point-neutralization chamber 33, Carbon point-neutralizes pressing filtering liquid gravity flow and enters carbon point-neutralizer liquid storage tank 38, is provided with outside carbon point-neutralizer liquid storage tank 38 Carbon point-is neutralized into pressing filtering liquid and is pumped to 2# carbon point-neutralization chamber 35 4# delivery pump 43, in 2# carbon point -35 peripheral hardware of neutralization chamber It is equipped with the 5# delivery pump 44 that secondary carbon point-neutralizer is pumped to 2# filter press 39, secondary carbon point-neutralizes pressing filtering liquid gravity flow and enters Carbon point-neutralizer liquid storage tank 38.
Pre- leachate evaporation and crystallization system VI of the invention uses the MVR evaporation concentration system of the prior art, system equipment It can be directly commercially available.
The course of work of the utility model is as follows:
First the broken waste lining installed is transported to pre- leaching system workshop with box feed bin, utilizes feeding electric hoist 12 allocate and transport box feed bin to workshop overhead from ground, by the waste lining discharging in box feed bin to belt conveyor 11, belt Waste lining is delivered in closed pre- leaching tanks 5 by conveyer automatically, and waste lining is carried out in closed pre- leaching tanks with NaOH solution It is pre- to leach.The waste gas utilization exhaust fan 8 for presoaking out the predominantly ammonia generated is evacuated to one-stage water wash by offgas duct 9 and washs tower 1 It carries out one-stage water wash to wash, then carries out second level water washing through second level water wash column 2, fully absorb the ammonia that pre- leaching section generates (NH3), level-one sulfuric acid scrubbing is carried out subsequently into level-one sulfuric acid scrubbing tower 3, then carries out second level sulfuric acid through second level sulfuric acid scrubbing tower 4 Washing, produces ammonium sulfate, tail gas qualified discharge.The sulfuric acid of recycling is emitted into sulfuric acid storage pool 45.Pass through electric drive hydraulic thruster 6 It automatically controls and opens discharge door 10, the waste lining slurry after pre- leaching process enters subsequent pre- leaching by feeding chute 7 Carry out leaching process in the leaching pond 14 of system, leachate can be by liquid outlet 18 from perpendicular 19 even of wall the overflow of overflow Enter in liquid chute 16, then be led to underflow pipe 20 through drainage tube 22, then flow into transfer tank 15, the solution in transfer tank 15 reaches When a certain amount of, then 23 are pumped by transfer and is pumped to subsequent processing process.Since leachate is steady from pond is leached by liquid outlet 2 Overflow will not bring the solid content for leaching bottom of pond portion i.e. leached mud into transfer tank, simultaneously convenient for subsequent processing to liquid chute 16 And do not block subsequent processing device.When needing to be filtered dry the leached mud for leaching and precipitating in pond, Open valve 21 is leached remaining in pond Underflow filtered in steck shape groove 17 by filter plate side by side to underflow pipe, arranged by underflow pipe to transfer tank 7.Underflow drains Afterwards, leached mud is gradually drained, and circulated sprinkling washing is carried out using water to the leached mud drained in leaching pond later, to leaching Slag carries out the washing lotion after first time cleaning and enters transfer tank 15 by drain line 20, then by transferring pump 23 and transferring tube pump It send to a washing lotion liquid storage tank 26b, two washing lotions after cleaning is carried out second to leached mud and pass through drain line 20 into entering Turn trough 15, then two washing lotion liquid storage tank 26c are pumped to by transferring pump 23 and transferring pipe, after carrying out third time cleaning to leached mud Three washing lotions enter transfer tank 15 by drain line 20, then are pumped to three washing lotion liquid storage tanks by transferring pump 23 and transferring pipe 26d carries out four washing lotions after the 4th cleaning to leached mud and enters transfer tank 1 by drain line 20, then passes through transfer Pump 23 and transfer pipe are pumped to four washing lotion liquid storage tank 26e.In general, the leached mud after four washings has reached environmental protection and wants It asks, the leached mud that washing reaches requirement, which is drained, can be taken off and sent with overhead traveling crane 27 to follow-up producing process to continue to be used. The leaching process of next batch waste lining can be carried out later, at this point, inciting somebody to action respectively by respective suction pump 25 and liquid pushing tube 28 One washing lotion, which is pumped to, leaches the leaching that pond is used for next group waste lining, and two washing lotions, which are pumped to, leaches pond for next batch leached mud One wash, three washing lotions, which are pumped to, to be leached pond and washes for the two of next batch leached mud, and four washing lotions, which are pumped to, leaches pond for next The three of batch leached mud wash, it is generally the case that next batch leached mud is usually only just needed using new water, so when four wash It moves in circles and is leached, washed, realize that the classification cycle of washing water utilizes, cleaning effect can be promoted, and cleaning is greatly reduced The water consume of leached mud.The steck shape groove 17 of leaching bottom of pond portion introduces underflow pipe after can converging underflow, and drain is thoroughly smooth, no Leachate can be caused to remain in bottom of pond, convenient for draining leached mud.Filter plate stops the solid content of sedimentation, in case it flows into transfer Slot.Leachate in transfer tank is pumped to leachate liquid storage tank 26a by transferring pump 23 and transferring pipe, then by infusion pump 29 and Perfusion tube 30 is fed directly to subsequent oxidation except cyanogen, carbon point-neutralized system are handled, and leachate is introduced into oxidation broken cyanide slot 31, oxidation broken cyanide processing is carried out in the case where aoxidizing 32 stirring of broken cyanide agitating device, the oxidation broken cyanide liquid of formation is conveyed using 1# Pump 40 is delivered to 1# filter press 37 and carries out filters pressing, and oxidation broken cyanide pressing filtering liquid gravity flow enters oxidation broken cyanide liquid liquid storage tank 36 and stores；Oxygen The oxidation broken cyanide pressing filtering liquid changed in broken cyanide liquid liquid storage tank 36 is delivered to 1# carbon point-neutralization chamber 33 using 2# delivery pump 41, in carbon point- First time carbon point-neutralisation treatment is carried out under 34 stirring of neutralization chamber agitating device, a carbon after being disposed point-neutralizer 2# filter press 39 is delivered to using No. 3 delivery pumps 42 and carries out filters pressing processing, and a carbon point-neutralizes pressing filtering liquid and utilizes No. 4 delivery pumps 43 are delivered to 2# carbon point-neutralization chamber 35, carried out under carbon point -34 stirring of neutralization chamber agitating device in second of carbon point-and Processing, secondary carbon after being disposed point-neutralizer are delivered to 2# filter press 39 using 5# delivery pump 44 and carry out filters pressing processing, and two Secondary carbon point-neutralizes pressing filtering liquid gravity flow and stores into carbon point-neutralizer liquid storage tank 38, is subsequently delivered to evaporative crystallization process and is steamed Send out crystallization treatment.The filtrate aluminium hydroxide of filters pressing can export trade to alumina producing factory.Secondary carbon point-neutralizes pressing filtering liquid and enters preimpregnation Out after liquid evaporation and crystallization system VI, be concentrated by evaporation by MVR, the sodium salt produced can be used as roasting and starting aluminum electrolytic cell material and The slagging agent ingredient of molten aluminum founding returns to aluminum electrolysis and uses, realizes the complete harmless of aluminium electroloysis waste lining leachate Change processing, and waste lining waste residue no longer needs to build library stockpiling and the processing of outer committee.

Claims (3)

1.一种铝电解废槽衬堆浸处理系统，其特征在于，包括尾气处理系统(I)、预浸出系统(II)、浸出系统(III)、储液系统(IV)、氧化除氰及碳分-中和系统(V)、预浸出液蒸发结晶系统(VI)；1. an aluminum electrolysis waste tank lining heap leaching treatment system, is characterized in that, comprises tail gas treatment system (I), pre-leaching system (II), leaching system (III), liquid storage system (IV), oxidative decyanation and Carbon separation-neutralization system (V), pre-leaching liquid evaporation crystallization system (VI); 所述尾气处理系统(I)包括设置于厂房外的顺序连通的一级水洗涤塔(1)、二级水洗涤塔(2)、一级硫酸洗涤塔(3)、二级硫酸洗涤塔(4)；The tail gas treatment system (1) comprises a first-stage water washing tower (1), a second-stage water washing tower (2), a first-stage sulfuric acid washing tower (3), and a second-stage sulfuric acid washing tower ( 4); 所述预浸出系统(II)包括安装架设在厂房内的密闭预浸出槽(5)、连接于密闭预浸出槽出料口的下料溜槽(7)、设置于密闭预浸出槽出料口的由电动液压推杆(6)控制开启的出料门(10)、安装于预浸出槽上方的皮带输送机(11)、设置于皮带输送机上方的上料电葫芦(12)、从密闭预浸出槽顶部引出并通至密闭预浸出槽下方的尾气吸收管(13)、连接在尾气吸收管上的尾气风机(8)及连接尾气风机的尾气管(9)；尾气管(9)的后端与尾气处理系统的一级水洗涤塔(1)的进气口连通；The pre-leaching system (II) comprises a closed pre-leaching tank (5) installed and erected in the factory building, a feeding chute (7) connected to the discharge port of the closed pre-leaching tank, and a discharge chute (7) arranged at the discharge port of the closed pre-leaching tank. The discharge door (10) controlled and opened by the electro-hydraulic push rod (6), the belt conveyor (11) installed above the pre-leaching tank, the feeding electric hoist (12) installed above the belt conveyor, and the The top of the leaching tank leads out and leads to the tail gas absorption pipe (13) below the closed pre-leaching tank, the tail gas fan (8) connected to the tail gas absorption pipe and the tail gas pipe (9) connected to the tail gas fan; the rear of the tail gas pipe (9) The end is communicated with the air inlet of the primary water washing tower (1) of the tail gas treatment system; 所述浸出系统(III)包括在地基上挖坑后构筑的位于下料溜槽(7)出料端下方的浸出池(14)、构筑于浸出池旁位置低于浸出池的中转槽(15)、设置于浸出池出流侧的液体溜槽(16)；所述浸出池(14)的池底为向出料侧逐渐下斜的斜坡面，在池底设置有鱼排形沟槽(17)，在浸出池的出流侧池壁底部开设有出液口(18)，出液口外接向上通向液体溜槽(16)的溢流竖壁(19)，所述鱼排形沟槽(17)的最低处出口通过底流管(20)与中转槽(15)相通，在鱼排形沟槽的出口处设置有阀门(21)，在鱼排形沟槽顶部铺设有过滤板；在液体溜槽(16)底部连接有通向底流管(20)的竖直引流管(22)，在中转槽(15)旁设置有转送泵(23)；The leaching system (III) comprises a leaching tank (14) located below the discharge end of the unloading chute (7) constructed after digging a pit on the foundation, and a transfer tank (15) constructed next to the leaching tank and positioned below the leaching tank 2. A liquid chute (16) arranged on the outflow side of the leaching tank; the bottom of the leaching tank (14) is a slope surface that slopes down gradually toward the discharge side, and a fish row-shaped groove (17) is arranged at the bottom of the tank. , a liquid outlet (18) is provided at the bottom of the outflow side wall of the leaching tank, and the liquid outlet is externally connected to the overflow vertical wall (19) of the liquid chute (16), and the fish row-shaped groove (17) ) of the lowest part of the outlet is communicated with the transfer tank (15) through the bottom flow pipe (20), a valve (21) is arranged at the outlet of the fish-shaped groove, and a filter plate is laid on the top of the fish-shaped groove; in the liquid chute (16) The bottom is connected with a vertical drainage pipe (22) leading to the underflow pipe (20), and a transfer pump (23) is arranged beside the transfer tank (15); 所述储液系统(IV)包括顺序设置的至少5个储液池，每一个储液池的池底均为斜坡式池底，在池底的斜坡低端一角设置有下凹的汇流槽(24)，在每个汇流槽处各设置有一组抽水泵(25)；顺序设置的储液池依次为浸出液储液池(26a)、一洗液储液池(26b)、二洗液储液池(26c)、三洗液储液池(26d)和四洗液储液池(26e)，分别储存废槽衬浸出液、洗涤浸出渣的一洗液、二洗液、三洗液、四洗液，在一洗液储液池(26b)、二洗液储液池(26c)、三洗液储液池(26d)和四洗液储液池(26e)的汇流槽处分别设置有将清洗液泵送返回至浸出池(14)的送液管(28)和抽水泵(25)，转送泵(23)将分批进入中转槽的浸出液、一洗液、二洗液、三洗液、四洗液分别泵送至浸出液储液池(26a)、一洗液储液池(26b)、二洗液储液池(26c)、三洗液储液池(26d)和四洗液储液池(26e)，在浸出液储液池的汇流槽(24)处设置有将浸出液泵送至后续氧化除氰及碳分-中和系统的氧化破氰槽(31)的输液管(30)及输液泵(29)；Described liquid storage system (IV) comprises at least 5 liquid storage tanks that are arranged in sequence, and the bottom of each liquid storage tank is a slope type pool bottom, and a concave confluence groove ( 24), a group of pumping pumps (25) are provided at each confluence tank; the liquid storage tanks arranged in sequence are the leachate liquid storage tank (26a), the first washing liquid storage tank (26b), the second washing liquid storage liquid The tank (26c), the three-washing liquid storage tank (26d) and the four-washing liquid storage tank (26e) store the waste tank lining leachate, the first washing liquid, the second washing liquid, the third washing liquid, and the fourth washing liquid for washing the leach residue, respectively. The first washing liquid storage tank (26b), the second washing liquid storage tank (26c), the third washing liquid storage tank (26d) and the fourth washing liquid storage tank (26e) are respectively provided with The cleaning liquid is pumped back to the liquid feeding pipe (28) and the suction pump (25) of the leaching tank (14), and the transfer pump (23) will transfer the leaching liquid, the first washing liquid, the second washing liquid and the third washing liquid entering the transfer tank in batches and the four washing liquids are pumped to the leachate storage tank (26a), the first washing liquid storage tank (26b), the second washing liquid storage tank (26c), the third washing liquid storage tank (26d) and the fourth washing liquid storage tank (26d). The liquid pool (26e) is provided with an infusion pipe (30) for pumping the leachate to the oxidation cyanide breaking tank (31) of the subsequent oxidative cyanide removal and carbon separation-neutralization system at the confluence tank (24) of the leachate storage tank and an infusion pump (29); 所述氧化除氰及碳分-中和系统(V)包括内部设置有氧化破氰搅拌装置(32)的氧化破氰槽(31)、内部设有碳分-中和槽搅拌装置(34)的1#碳分-中和槽(33)和2#碳分-中和槽(35)、氧化破氰液储液池(36)、设置于氧化破氰液储液池上方的1#压滤机(37)、碳分-中和液储液池(38)、设置于碳分-中和液储液池上方的2#压滤机(39)；在氧化破氰槽(31)外设置有将氧化破氰液泵送至1#压滤机(37)的1#输送泵(40)，氧化破氰压滤液自流进入氧化破氰液储液池(36)储存，在氧化破氰液储液池外设置有将氧化破氰压滤液泵送至1#碳分-中和槽(33)的2#输送泵(41)，在1#碳分-中和槽(33)外设置有将一次碳分-中和液泵送至2#压滤机(39)的3#输送泵(42)，一次碳分-中和压滤液自流进入碳分-中和液储液池(38)，在碳分-中和液储液池(38)外设置有将一次碳分-中和压滤液泵送至2#碳分-中和槽(35)的4#输送泵(43)，在2#碳分-中和槽(35)外设置有将二次碳分-中和液泵送至2#压滤机(39)的5#输送泵(44)，二次碳分-中和压滤液自流进入碳分-中和液储液池(38)。The oxidative cyanide removal and carbon fractionation-neutralization system (V) comprises an oxidation cyanide breaking tank (31) provided with an oxidation cyanide breaking stirring device (32) inside, and a carbon fractionation-neutralizing tank stirring device (34) inside. 1# carbon fraction-neutralization tank (33) and 2# carbon fraction-neutralization tank (35), oxidation cyanide breaking liquid storage tank (36), and 1# pressure tank set above the oxidation breaking cyanide liquid storage tank A filter (37), a carbon fraction-neutralization liquid storage tank (38), a 2# filter press (39) arranged above the carbon fraction-neutralized liquid storage tank; outside the cyanide-breaking tank (31) A 1# delivery pump (40) for pumping the oxidized cyanide-broken liquid to the 1# filter press (37) is provided, and the oxidized cyanogen-broken pressure filtrate flows into the oxidized cyanogen-broken liquid storage tank (36) for storage, and is stored in the oxidized cyanogen-broken liquid storage tank (36). A 2# delivery pump (41) is arranged outside the liquid storage tank for pumping the oxidized cyanide pressure filtrate to the 1# carbon fraction-neutralization tank (33), and is arranged outside the 1# carbon fraction-neutralization tank (33). There is a 3# delivery pump (42) that pumps the primary carbon-neutralizing liquid to the 2# filter press (39), and the primary carbon-neutralizing press filtrate flows into the carbon-neutralizing liquid storage tank (38). ), is provided with the 4# delivery pump (43) that pumps the primary carbon fraction-neutralization pressure filtrate to the 2# carbon fraction-neutralization tank (35) outside the carbon fraction-neutralization liquid storage tank (38), A 5# delivery pump (44) for pumping the secondary carbon fraction-neutralization liquid to the 2# filter press (39) is arranged outside the 2# carbon fraction-neutralization tank (35). And the press filtrate flows into the carbon-neutralization liquid storage tank (38). 2.根据权利要求1所述的铝电解废槽衬堆浸处理系统，其特征在于，所述废槽衬浸出池(14)设置于厂房内，在厂房顶部设置有天车(27)。2 . The aluminum electrolysis waste tank lining heap leaching treatment system according to claim 1 , wherein the waste tank lining leaching tank ( 14 ) is arranged in the factory building, and a crane ( 27 ) is arranged on the top of the factory building. 3 . 3.根据权利要求1或2所述的铝电解废槽衬堆浸处理系统，其特征在于，所述浸出池(14)并列设置有2个以上，每两个相邻的浸出池交界处外侧设置一个共用的中转槽(15)，各浸出池分别通过各自的底流管(20)与中转槽(15)连通，所述竖直引流管(22)的底部分叉，分别通向一根底流管。3. The aluminum electrolysis waste tank lining heap leaching treatment system according to claim 1 or 2, wherein the leaching tank (14) is arranged with more than 2 in parallel, and every two adjacent leaching tank junctions are outside the junction A common transfer tank (15) is provided, each leaching tank is communicated with the transfer tank (15) through respective underflow pipes (20), and the bottom part of the vertical drainage pipes (22) is forked, respectively leading to an underflow Tube.
CN201821514427.3U 2018-09-17 2018-09-17 A kind of aluminum electrolysis waste tank lining heap leaching treatment system Active CN208853441U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108906862A (en) * 2018-09-17 2018-11-30 云南云铝润鑫铝业有限公司 A kind of aluminium electroloysis waste lining dump leaching processing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108906862A (en) * 2018-09-17 2018-11-30 云南云铝润鑫铝业有限公司 A kind of aluminium electroloysis waste lining dump leaching processing system

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