CN204550083U - Based on the Bayer process red mud useful component tripping device of batch mixing method - Google Patents

Abstract

The utility model discloses a kind of Bayer process red mud useful component tripping device based on batch mixing method, comprise aluminium sodium extraction unit, calcium extraction unit, silicon extraction unit, rare earth extraction unit and the flocculation agent extraction unit implemented step by step.Wherein aluminium sodium extraction unit comprises red mud pipeline, suction culvert, aluminium sodium solution extraction pipeline, aluminium vanadine e Foerderanlage and the blending device set gradually along red mud pipeline, grade one filter, sintering oven, water logging groove and grade one filter.The utility model to greatest extent in optimize red mud comprehensive utilization production line, make that water obtains circulation, acid utilized, avoid the pollution to sintering oven and destruction, and connect with existing alumina producing flow process as far as possible, achieve the automatization of industry, save human cost, reduce the impact of environment on operator.

Description

Based on the Bayer process red mud useful component tripping device of batch mixing method

Technical field

The utility model belongs to the technical field of comprehensive utilization of solid waste, relates to the comprehensive utilization device of the red mud that a kind of alumina producing Bayer process discharges.

Background technology

The contaminative waste residue of discharging when red mud is Aluminium industry extraction aluminum oxide, average often produces 1 ton of aluminum oxide, incidentally produces 1.0 ~ 2.0 tons of red muds.China is as large alumina producing state of the world the 4 four, and the red mud of annual discharge is up to millions of tons.The stacking of a large amount of red mud, not only occupies a large amount of soil, causes serious pollution to environment simultaneously.Wherein, containing a large amount of strong basicity chemical substances in red mud, to the aggressive of biological and metal, siliceous material.

Result of study shows, includes aluminium, sodium, iron, calcium, rare earth (as titanium, vanadium etc.) multiple element in red mud, and composition contained in the red mud of each producer discharge is also different.In recent years, there is the method for comprehensive utilization of multiple red mud, comprising by red mud calcine after again by the scheme of component step by step arithmetic, high-temperature calcination is carried out by adding activating component in red mud, add acid again after being separated by Silicified breccias and carry out step by step arithmetic, but these are only limitted to the method for lab design, lack the device in industrial applications, realize large-scale automatic industrial and produce.

Utility model content

The utility model discloses a kind of tripping device for useful component in Bayer process red mud, achieve the step by step arithmetic of the aluminium in red mud, sodium, calcium, iron and rare earth metal, what substantially can realize red mud eats dry bleeding, and have realization of industrialization simple, be convenient to features such as associating with existing production unit, industrialization automatization is strong.

The technical solution of the utility model is as follows:

Based on the Bayer process red mud useful component tripping device of batch mixing method, comprise aluminium sodium extraction unit, described aluminium sodium extraction unit comprises red mud pipeline, suction culvert, aluminium sodium solution extraction pipeline, aluminium vanadine e Foerderanlage, activator e Foerderanlage and the blending device set gradually along red mud pipeline, sintering oven, water logging groove and grade one filter;

Red mud pipeline is connected with blending device with the output terminal of bauxitic clay e Foerderanlage, and water is injected water logging groove by described suction culvert, and liquid outlet and the aluminum solutions of described grade one filter extract pipeline and be connected; The bauxitic clay feed particles of the red mud slurry of red mud Pipeline transport, bauxitic clay e Foerderanlage conveying and the activator of activator e Foerderanlage conveying are mixed in proportion as after solid-state at blending device, be delivered in sintering oven again and sinter, sintered material is after the water logging of water logging groove, filter through grade one filter again, one-level filtrate enters aluminum solutions and extracts pipeline, and one-level filter residue then enters next step and extracts link; The activator that pipeline production terminal of extracting aluminium sodium solution reclaims enters activator e Foerderanlage again, realizes recycling of activator.

Above-mentioned based in the Bayer process red mud useful component tripping device of batch mixing method, the liquid outlet of grade one filter is connected with suction culvert, realizes the circulation water logging of sintered material, and the one-level filter residue after circulation water logging enters next step and extracts link.

Above-mentioned based in the Bayer process red mud useful component tripping device of batch mixing method, water logging groove is provided with stripping mill, grinding refinement is carried out to the material that sintering oven exports.

Above-mentioned based in the Bayer process red mud useful component tripping device of batch mixing method, also comprise and be arranged on calcium extraction unit after aluminium sodium extraction unit and silicon extraction unit;

Calcium extraction unit comprises acid inlet tube road, pickling tank, secondary filter and calcium returnable, acid is injected pickling tank by described acid inlet tube road, described one-level filter residue is delivered to pickling tank, after acidleach and secondary filter are filtered, secondary filter residue is delivered in calcium returnable, and secondary filtrate enters next step and extracts link;

Silicon extraction unit comprises ageing tank, tertiary filter and silicon returnable, and the filtrate of previous step is after ageing tank ageing, and filter through tertiary filter, three grades of filter residues are delivered to silicon returnable, and three grades of filtrates enter next step and extract link.

Above-mentioned based in the Bayer process red mud useful component tripping device of batch mixing method, the liquid outlet of tertiary filter is connected with acid inlet tube road.

Above-mentioned based in the Bayer process red mud useful component tripping device of batch mixing method, also comprise the flocculation agent extraction unit being arranged on device end, described flocculation agent extraction unit comprises crystallization apparatus and flocculation agent returnable, the output solution of previous step is after crystallization apparatus, solids is delivered to flocculation agent returnable, liquid after crystallization is then connected with suction culvert by pipeline, and water is recycled.

Above-mentioned based in the Bayer process red mud useful component tripping device of batch mixing method, arrange after being also included in acidleach flow process rare earth extraction unit, described rare earth extraction unit comprises titanium, vanadium, the scandium extraction plant of titanium extraction plant or cascade, previous step filtrate, after the extraction of rare earth extraction unit, exports solution and enters next step link.

Above-mentioned based in the Bayer process red mud useful component tripping device of batch mixing method, be provided with temperature sensor and PH detector in water logging groove, pickling tank, ageing tank, crystallization apparatus; Whipping appts is provided with in described water logging groove, pickling tank, ageing tank.

Above-mentioned based in the Bayer process red mud useful component tripping device of batch mixing method, red mud pipeline, suction culvert, acid inlet tube road, grade one filter liquid outlet and tertiary filter liquid outlet are provided with autocontrol valve, achieve the automatization manipulation of Production Flow Chart.

Above-mentioned based in the Bayer process red mud useful component tripping device of batch mixing method, the acid of injecting in pickling tank is sulfuric acid; The number of times of described circulation acidleach is 2-7 time, and each circulation acidleach needs the mole number injecting sulfuric acid according to the adjustment of PH measuring result.

Advantageous Effects of the present utility model is as follows:

1, the utility model provides the step by step arithmetic device of red mud comprehensive utilization, device comprises the extraction unit of each component, and devises multiple combination scheme, is convenient to producer and arranges in pairs or groups on the spot according to working condition, or carry out the extraction of whole component, also only can carry out the extraction of constituent part.Such as producer can only carry out aluminium according to self-condition, sodium extracts, and also can carry out aluminium, sodium, calcium, silicon extract or the whole components that comprise rare earth are extracted.

2, the utility model by red mud slurry and bauxite grains according to certain ratio uniform be mixed to form solid-state after, insert in sintering oven and sinter, thus when avoiding direct sintering red mud slurry, owing to only sintering the energy dissipation that high moisture content red mud brings and the deficiency polluting damage sintering oven, further increase efficiency of energy utilization and benefit output.By selecting suitable temperature, sintering time and activator ratio, can realize most aluminium element reaction in red mud and bauxite is water-soluble composition simultaneously, the elements such as red mud and silicon in alumyte, iron, calcium are then water insoluble, after follow-up acidleach, divided component to extract.

3, the aluminium sodium solution that aluminium sodium extraction link obtains is incorporated in the production line of alumina producing producer by Pipe transfer by the utility model, carry out carbon divisional processing or crystal seed separation, alumina product is obtained in production terminal, and reclaimed activator---sodium carbonate, make it can again insert cycle applications in sintering oven, save cost.

4, the liquid outlet of grade one filter is extracted pipeline by valve and aluminium sodium solution and is connected with suction culvert by the utility model, achieve the circulation water logging of sintered material, can by the valve in automatic pilot piping, realize after the circulation water logging of material set point number, the more automatic aluminium sodium solution that exported to by solution extracts pipeline.

5, the liquid outlet of tertiary filter is extracted pipeline with acid inlet tube road with next step solution by valve and is connected by the utility model, achieve the circulation acidleach to residue, can by the valve in automatic pilot piping, realize after the circulation acidleach of residue set point number, more automatically solution is exported to next step and extract in flow process.

6, the utility model directly by silicon extract after solution crystallization after onestep extraction be flocculation agent, wherein comprise ferric sulfate, remain undrawn Tai-Ace S 150 and rare earth element, simplify extraction step, avoid the industrial cost increased for extracting remaining a small amount of aluminium, improve production efficiency, reduce cost and equipment construction expense.

7, the utility model is provided with rare earth extraction unit after calcium extraction unit or after silicon extraction unit, by extracting rare earth metals such as the titanium in red mud, vanadium, scandiums, further increases red mud utility value; Above-mentioned rare earth metal is adsorbed by resin ion in the existing acidleach flow process of the utility model simultaneously, simplifies extraction procedure, saved cost.

8, extracting directly after the solution crystallization after rare earth element extraction is flocculation agent by the utility model, wherein comprise ferric sulfate, remain undrawn Tai-Ace S 150 and remain undrawn rare earth element, simplify extraction step, avoid the industrial cost increased for extracting remaining a small amount of aluminium, improve production efficiency, reduce cost and equipment construction expense.

9, the sulfuric acid added directly is converted to the products such as calcium sulfate, Tai-Ace S 150, ferric sulfate by the utility model, without the need to the recovery to sulfuric acid in device enforcement, and is translated into high value-added product, simplifies production stage, improve efficiency.

10, the utility model has installed stripping mill on water logging groove, carries out grinding refinement, make the dissolving material refinement entered in water logging groove to the material that sintering oven exports, thus improves efficiency and the speed of water logging dissolving.

11, the water after flocculation agent crystallization is connected with suction culvert by the utility model, achieves recycling of water in production line, saves raw material and discharge costs further.

12, the utility model is provided with multiple Automated condtrol valve and temperature, PH sensor in a device, and combines the alumina silica ratio parameter of actual measurement, achieves the Automated condtrol of production, has saved human cost, reduce the impact of environment on operator.

Accompanying drawing explanation

Fig. 1 is the device composition frame chart of the complete separating step of the utility model;

Fig. 2 is the principle of device schematic diagram of the utility model single water logging aluminium sodium extraction step;

Fig. 3 is the principle of device schematic diagram of the utility model circulation water logging aluminium sodium extraction step;

Fig. 4 is the water logging groove principle schematic that the utility model grinds with stripping;

Fig. 5 is point component extracting apparatus principle schematic of the utility model single acidleach;

Fig. 6 is point component extracting apparatus principle schematic of the utility model circulation acidleach;

Fig. 7 is the principle of device schematic diagram that the utility model eliminates rare earth extraction step;

Fig. 8 is the principle of device schematic diagram after the utility model rare earth extraction step is placed on step of acid dipping.

Reference numeral is as follows:

1-blending device; 3-sintering oven; 4-water logging groove; 5-grade one filter; 6-pickling tank; 7-secondary filter; 8-ageing tank; 9-tertiary filter; 10-extraction plant; 11-crystallization apparatus; 12-aluminium sodium solution extracts pipeline; 21-calcium returnable; 22-silicon returnable; 23-flocculation agent returnable; 31-red mud pipeline; 32-suction culvert; 33-acid inlet tube road; 35-aluminium vanadine e Foerderanlage; 36-activator e Foerderanlage; 40-stripping is ground; 41-sintered material; 42-material to be dissolved; 51-aluminium sodium extraction unit; 52-calcium extraction unit; 53-silicon extraction unit; 54-rare earth extraction unit; 55-flocculation agent extraction unit; The pending red mud slurry of 60-; 61-bauxitic clay feed particles; 63-alumina producing terminal.

Embodiment

As shown in Figure 1, in the utility model Bayer process red mud, the tripping device of useful component comprises aluminium sodium extraction unit 51, calcium extraction unit 52, silicon extraction unit 53, rare earth extraction unit 54 and the flocculation agent extraction unit 55 implemented step by step.Wherein rare earth extraction unit 54 also can omit and merge with flocculation agent extraction unit 55, after calcium extraction unit can also be placed on 52 or silicon extraction unit 53 after position.Simultaneous oxidation aluminium manufacturer can arrange in pairs or groups on the spot according to existing condition, or carries out the extraction of whole component, also only can carry out the extraction of constituent part.Such as producer can only carry out aluminium according to self-condition, sodium extracts, also can according to carrying out aluminium, sodium, calcium, silicon extraction or carrying out other the whole components extractions except rare earth.

As shown in Figures 2 and 3, aluminium sodium extraction unit 51 comprises red mud pipeline 31, suction culvert 32, aluminium sodium solution extract pipeline 12, aluminium vanadine e Foerderanlage 35 and the blending device 1, sintering oven 3, water logging groove 4 and the grade one filter 5 that set gradually along red mud pipeline 31; Red mud pipeline 31 is connected with blending device 1 with the output terminal of bauxitic clay e Foerderanlage 35, and water is injected water logging groove 4 by suction culvert 32, and liquid outlet and the aluminum solutions of grade one filter 5 extract pipeline 12 and be connected; The red mud slurry 60 that red mud pipeline 31 is carried and the bauxitic clay feed particles 61 that bauxitic clay e Foerderanlage 35 is carried, and the activator that activator e Foerderanlage 36 is carried is mixed in proportion after into solids at blending device 1, be delivered to again in sintering oven 3 and sinter, thus when avoiding direct sintering red mud slurry, that brings due to high moisture content wastes energy and pollutes the deficiency damaging sintering oven, meet the requirement of sintering oven to material moisture, further increase efficiency of energy utilization and benefit output.

Sintered material after water logging groove 4 water logging, then filters through grade one filter 5, and one-level filtrate enters aluminum solutions and extracts pipeline 12, and one-level filter residue then enters next step and extracts link.The liquid outlet of grade one filter 5 extracts pipeline 12 by valve and aluminium sodium solution and is connected (see Fig. 2), the liquid outlet of grade one filter 5 also can extract pipeline 12 by valve with suction culvert 32 and aluminium sodium solution simultaneously and be connected, realize the circulation water logging (see Fig. 3) of sintered material, wherein the difference of Fig. 2 and Fig. 3 is only whether adopt circulation water logging, although circulation water logging adds the flow process of whole leaching, the extraction yield of aluminium and other compositions can be improved.

Need in sintering process to add activator, wherein first-selected sodium carbonate, also can adopt sodium hydroxide.Sintered product after water logging groove 4 fully stirs, then filters through grade one filter 5, and after one-level filtrate multi-reflow to water logging groove 4 pairs of residue leachings, finally enter aluminium sodium solution and extract pipeline 12, one-level filter residue then enters next step and extracts link.The number of times of water logging of wherein circulating is 2-6 time, tests and chooses, and can adopt aborning by the automatic control to valve, realize the dipped journey of the recirculated water of set point number according to different materials.

By selecting suitable temperature, sintering time and activator ratio, can realize most aluminium element reaction in red mud and bauxite is water-soluble composition simultaneously, the elements such as red mud and silicon in alumyte, iron, calcium are then water insoluble, after follow-up acidleach, divided component to extract.The aluminium sodium solution major ingredient that aluminium sodium extraction unit 51 obtains is sodium aluminate solution, can be directly incorporated in the production line terminal of existing aluminum oxide producer, the decomposition of crystal seed of such as aluminum oxide or carbonation decompsition process flow process obtain alumina product, and have reclaimed activator---sodium carbonate or sodium hydroxide; Activator can insert sintering oven again as activator cycle applications, has saved cost.Other calcium, iron, silicon and rare earth element then become residue and enter next step processing links.

As shown in Figure 4, in order to improve the water-soluble of sintered product and leaching efficiency, water logging groove 4 is provided with stripping mill 40, inject water and sintered material 41 in the import of stripping mill 40 simultaneously, while grinding refinement is carried out to sintered material 41, increase water logging efficiency, make material to be dissolved 42 refinement further entered in water logging groove 4, and substantially increase efficiency and the speed of water logging dissolving.

As shown in Fig. 5 to Fig. 8, calcium extraction unit comprises acid inlet tube road 33, pickling tank 6, secondary filter 7 and calcium returnable 21, acid inlet tube road 33 is connected with pickling tank 6, one-level filter residue is delivered to pickling tank through acidleach, pickling tank 6 is with whipping appts, filter through secondary filter 7 after stirring, secondary filter residue is delivered in calcium returnable 21, and secondary filtrate enters next step silicon and extracts link; What wherein inject in pickling tank is sulfuric acid, and the calcium ion in sulfate ion and residue generates calcium sulfate, is recycled in calcium returnable 21 after being filtered.

Silicon extraction unit 53 comprises ageing tank 8, tertiary filter 9 and silicon returnable 22, secondary filtrate is after ageing tank 8 ageing, filtered by tertiary filter 9, three grades of filter residues are delivered to silicon returnable 22, three grades of filtrates and enter next step rare earth extraction link (see Fig. 5).The principle that silicon extracts is after the acidleach process by adding sulfuric acid, and sulfate ion and calcium react and generates calcium sulfate and be filtered recovery, and the hydrogen ion in liquid and element silicon synthesize silicic acid, after the ageing under certain temperature and time conditions, become fine silicic acid.

Wherein in order to realize the circulation acidleach to residue, the liquid outlet of tertiary filter (9) can extracting link with acid inlet tube road (33) and next step be connected (see Fig. 6) simultaneously.Wherein the difference of Fig. 5 and Fig. 6 is only whether adopt circulation acidleach, the object of circulation acidleach is to increase the solubleness of residue in acid, although add flow process and the step of leaching, the number of times of usual circulation acidleach is 2-7 time, test according to different materials and choose, and can adopt aborning by the automatic control to valve, after realizing the circulation acidleach to residue set point number, more automatically solution is exported to next step and extract in flow process.

As shown in Figure 7, whole device can save rare earth extraction unit 54, namely the solution after silicon extraction can directly enter flocculation agent extraction step, flocculation agent extraction unit is last part of device, comprise crystallization apparatus 11 and flocculation agent returnable 23, aforesaid three grades of filtrates are after crystallization apparatus 11, temperature control evaporative crystallization under certain envrionment temperature, flocculation agent returnable 23 is delivered to after solids crystallization, the water that crystallization is reclaimed is connected with suction culvert 32, or be temporarily stored in water reservoir, get for suction culvert pump, water is recycled, further save cost.

The principle of work of flocculation agent extraction step is, solution after sulfuric acid to leach comprises the sulfuric acid thing of calcium sulfate, silicic acid, ferric sulfate, a small amount of Tai-Ace S 150 and rare earth element, wherein calcium sulfate and silicic acid are respectively after aforesaid calcium extracts and silicon extracts, the sulfuric acid thing of remaining ferric sulfate, Tai-Ace S 150 and rare earth element can by being mixed into flocculation agent after crystallization, be converted into product, for Industrial Wastewater Treatment.The advantage of this simplification step is without the need to being separated with aluminium remaining iron, also need not reclaim sulfuric acid simultaneously, avoids link and increases and cause industrialization step complexity, reduce production cost.

As shown in Figure 8, rare earth extraction unit 54 is added after acidleach flow process, position after rare earth extraction unit 54 can be arranged on calcium extraction unit 52 or after silicon extraction unit 53, rare earth extraction unit 54 comprises titanium, vanadium, the scandium extraction plant of titanium extraction plant or cascade, previous step filtrate, after rare earth extraction unit 54 extracts, exports solution and enters next step link.

The extraction of rare earth metal adopts existing ripe scheme, the scheme of ionic adsorption after usual employing acidleach, after such as scandium being adopted acidleach, then adopt massfraction be 1% P507 resin extraction, and then sodium hydroxide reextraction is carried out to resin, rare earth scandium can be obtained.After the extraction of rare earth is placed on step of acid dipping by the utility model, therefore eliminate the step of acid dipping required for independent resin extraction, further simplify program.

This device optimizes the production line of red mud comprehensive utilization in maximum, water is circulated, acid is fully used, avoid the pollution to sintering oven and damage, meet the requirement of sintering oven to material moisture, and connect with existing alumina producing flow process as far as possible, with arranging multiple temperature in timer, PH sensor sensor, and combine the monitoring to alumina silica ratio parameter and the control to automatic valve, realize the automatization of industry, save human cost, avoid the error thought and operate, and reduce the impact of severe environment on operator ' s health.

Claims (9)

1. based on the Bayer process red mud useful component tripping device of batch mixing method, it is characterized in that: comprise aluminium sodium extraction unit (51), blending device (1), sintering oven (3), water logging groove (4) and grade one filter (5) that described aluminium sodium extraction unit (51) comprises red mud pipeline (31), suction culvert (32), aluminium sodium solution extraction pipeline (12), aluminium vanadine e Foerderanlage (35), activator e Foerderanlage (36) and sets gradually along red mud pipeline (31);

Described red mud pipeline (31) is connected with blending device (1) with the output terminal of bauxitic clay e Foerderanlage (35), water is injected water logging groove (4) by described suction culvert (32), and liquid outlet and the aluminum solutions of described grade one filter (5) extract pipeline (12) and be connected; The bauxitic clay feed particles (61) that red mud slurry (60), bauxitic clay e Foerderanlage (35) that red mud pipeline (31) is carried are carried and the activator that activator e Foerderanlage (36) is carried are mixed in proportion as after solid-state at blending device (1), be delivered to again in sintering oven (3) and sinter, sintered material is after water logging groove (4) water logging, filter through grade one filter (5) again, one-level filtrate enters aluminum solutions and extracts pipeline (12), and one-level filter residue then enters next step and extracts link;

The activator that pipeline (12) production terminal (63) of extracting described aluminium sodium solution reclaims enters activator e Foerderanlage (62) again, realizes recycling of activator.

2. the Bayer process red mud useful component tripping device based on batch mixing method according to claim 1, it is characterized in that: the liquid outlet of described grade one filter (5) is connected with suction culvert (32), realize the circulation water logging of sintered material, the one-level filter residue after circulation water logging enters next step and extracts link.

3. the Bayer process red mud useful component tripping device based on batch mixing method according to claim 1, it is characterized in that: described water logging groove (4) is provided with stripping mill (40), grinding refinement is carried out to the material that sintering oven (3) exports.

4. according to one of any described Bayer process red mud useful component tripping device based on batch mixing method of claims 1 to 3, it is characterized in that: also comprise and be arranged on calcium extraction unit (52) after aluminium sodium extraction unit (51) and silicon extraction unit (53);

Described calcium extraction unit (52) comprises acid inlet tube road (33), pickling tank (6), secondary filter (7) and calcium returnable (21), pickling tank (6) is injected in acid by described acid inlet tube road (33), described one-level filter residue is delivered to pickling tank (6), after acidleach and secondary filter (7) are filtered, secondary filter residue is delivered in calcium returnable (21), and secondary filtrate enters next step and extracts link;

Described silicon extraction unit (53) comprises ageing tank (8), tertiary filter (9) and silicon returnable (22), the filtrate of previous step is after ageing tank (8) ageing, filter through tertiary filter (9), three grades of filter residues are delivered to silicon returnable (22), and three grades of filtrates enter next step and extract link.

5. the Bayer process red mud useful component tripping device based on batch mixing method according to claim 4, is characterized in that: the liquid outlet of described tertiary filter (9) is connected with acid inlet tube road (33).

6. the Bayer process red mud useful component tripping device based on batch mixing method according to claim 4, it is characterized in that: also comprise the flocculation agent extraction unit (55) being arranged on device end, described flocculation agent extraction unit comprises crystallization apparatus (11) and flocculation agent returnable (23), the output solution of previous step is after crystallization apparatus, solids is delivered to flocculation agent returnable (23), liquid after crystallization is then connected with suction culvert (32) by pipeline, and water is recycled.

7. the Bayer process red mud useful component tripping device based on batch mixing method according to claim 4, it is characterized in that: the rare earth extraction unit (54) arranged after being also included in acidleach flow process, described rare earth extraction unit (54) comprises titanium, vanadium, the scandium extraction plant (10) of titanium extraction plant (10) or cascade, previous step filtrate, after rare earth extraction unit (54) extraction, exports solution and enters next step link.

8. the Bayer process red mud useful component tripping device based on batch mixing method according to claim 6, is characterized in that: be provided with temperature sensor and PH detector in described water logging groove (4), pickling tank (6), ageing tank (8), crystallization apparatus (11); Described water logging groove (4), pickling tank (6), ageing tank are provided with whipping appts in (8).

9. the Bayer process red mud useful component tripping device based on batch mixing method according to claim 4, it is characterized in that: described red mud pipeline (31), suction culvert (32), acid inlet tube road (33), grade one filter (5) liquid outlet and tertiary filter (9) liquid outlet are provided with autocontrol valve, achieve the automatization manipulation of Production Flow Chart.