CN101092662A - Technique and equipment for treating electroplating sludge - Google Patents
Technique and equipment for treating electroplating sludge Download PDFInfo
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- CN101092662A CN101092662A CNA2007100216260A CN200710021626A CN101092662A CN 101092662 A CN101092662 A CN 101092662A CN A2007100216260 A CNA2007100216260 A CN A2007100216260A CN 200710021626 A CN200710021626 A CN 200710021626A CN 101092662 A CN101092662 A CN 101092662A
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Abstract
This invention discloses apparatus and method for treating electroplating sludge. The method comprises: (1) drying electroplating sludge (water content higher than 75%) to a water content of 40-65%; (2) uniformly mixing with coal, and sintering in a sintering furnace until the water content is 2-5%; (3) smelting in a smelting furnace; (4) refining and separating to obtain metal alloy. The apparatus comprises: a smelting furnace, a desulfurization deduster, a sintering furnace, a dust collection chamber and a water collection pool. The gas generated in the sintering or smelting process is treated by: introducing into the dust collection chamber through the dust exhaustion port of the sintering/smelting furnace, dust-falling, introducing into the desulfurization deduster, performing desulfurization amd dedusting, and exhausting. The water supplied by the water collection pool, and the wastewater generated in desulfurization amd dedusting is returned to the water collection pool for recycling. All of the treatment processes of the method are automatically performed by machines, so the danger of manual operation can be avoided. The method has such advantages as high efficiency, high safety and no pollution.
Description
Technical field
The invention belongs to the environmental protection treatment technical field, be specifically related to a kind of treatment process and device thereof of electroplating sludge.
Background technology
Electroplating sludge is to handle the throw out that produces in the electroplating sewerage process, and its main component is chromium, iron, copper, nickel, aluminium, zinc, magnesium, calcium, silicon, sulphur etc.Owing to contain a large amount of poisonous and hazardous heavy metals, it is useless admittedly to belong to controlled poisonous industry, and because the development of modernization industry, the quantity discharged of electroplating sludge is more and more, large-scale electroplating sludge if do not dealt carefully with, is eliminated hazardous and noxious substances, will produce serious destruction to environment, be detrimental to health.
Usually the treatment process of electroplating sludge mainly is wet processing, promptly adopt multi stage precipitation method, organic solvent extractionprocess to wait the heavy metal that separates in the electroplating sludge, these methods one side costs are higher and mud handling capacity is little, have the sewage discharge problem after handling on the other hand.
Chinese patent CN2818475Y discloses a kind of smelting furnace of handling electroplating sludge, and this patent is handled by electroplating sludge being added thermal reduction, isolates the alloy in the electroplating sludge.Though what this method adopted is dry process, has avoided the defective of above-mentioned wet method, this method is directly carried out melting to electroplating sludge, because the moisture content of electroplating sludge is more, so the large usage quantity of coke, the dust of generation is more, and the rate of recovery is lower.
Summary of the invention
The object of the present invention is to provide the electroplating sludge treatment process that a kind of treatment capacity is big, cost is low.
Another object of the present invention is to provide this technology employed device.
The technical scheme that realizes the present invention's first purpose is: a kind of treatment process of electroplating sludge has the following step: 1. being that electroplating sludge material more than 75% carries out drying with water content, is 40%～65% until the water content of material; 2. dried material and coal are mixed, the weight of described coal is 5～7% of mixture total weight amount, mixture is added carry out sintering in the sintering oven, and be 2%～5% until the water content of material; The gas that produces in the sintering carries out discharging behind the desulfurization and dedusting from the smoke outlet feeding desulfurizing dust-collector of sintering oven; 3. the material behind the sintering is added in the smelting furnace and carry out melting; The gas that produces in the melting carries out discharging behind the desulfurization and dedusting from the smoke outlet feeding desulfurizing dust-collector of smelting furnace; 4. the material after the melting is refined separation, promptly obtain metal alloy.
The drying of step described in 1. is for carrying out drying or dry in the cylinder stoving oven in the glass threshing ground, dried material moisture is 50%～55%.The weight of the coal of step described in 2. is 6% of mixture total weight amount.
The sintering oven of step described in 2. comprises body of heater, stove car and the light rail that cooperates the stove car to roll, and described body of heater has the active plugboard of fire door, opening for feed, smoke outlet, 2 to 4 viewing windows and fire door below, and described active plugboard is provided with blast inlet; The agglomerating step is as follows: (one) along the light rail body of heater, plugs active plugboard with the stove car, closes fire door; (2) with after the drying and the electroplating sludge material that is mixed with coal join on the stove car from opening for feed, from viewing window, mix back igniting sintering thoroughly; (3) introduce hot blast in blast inlet, the gas of generation feeds the desulfurizing dust-collector from smoke outlet; (4) when the water content of material reduces to 2%～5%, stop sintering, the stove car that material is housed is involved body of heater.
Described opening for feed is some oblong shaped orifices, opening for feed is provided with hopper, be provided with rotary electric machine in hopper one side, the rotation axis of described rotary electric machine passes described hopper and is positioned on the described opening for feed, and the rotating vane of rotation axis and the aperture of opening for feed adapt; Being incorporated as of material in the agglomerating step (two): with after the drying and the electroplating sludge material that is mixed with coal join in the hopper, start agitator motor, make material stirring powder essence, fall into from opening for feed on the stove car, the rotary electric machine that finishes afterwards covers on the opening for feed rotating vane and avoids material to fall.
The technical scheme that realizes the present invention's second purpose is: the device that a kind of electroplating sludge is handled, have smelting furnace and desulfurizing dust-collector, the gas that smelting furnace produces is discharged after by the desulfurizing dust-collector desulfurization and dedusting, also has sintering oven, the sintered material of described sintering oven adds in the smelting furnace and carries out melting, and the gas that described sintering oven produces is discharged after by the desulfurizing dust-collector desulfurization and dedusting; Described sintering oven comprises body of heater, stove car and the light rail that cooperates the stove car to roll, and described body of heater has the active plugboard of fire door, opening for feed, smoke outlet, 2 to 4 viewing windows and fire door below, and described active plugboard is provided with blast inlet.
Described opening for feed is some oblong shaped orifices, opening for feed is provided with hopper, be provided with rotary electric machine in hopper one side, the rotation axis of described rotary electric machine passes described hopper and is positioned on the described opening for feed, and the rotating vane of rotation axis and the aperture of opening for feed adapt.
Described stove car comprises car body and wheel, has some fire bars on the car body, and the car body below has rubbing board; The below of described smoke outlet is provided with a baffle plate; Described inboard wall of furnace body both sides respectively are provided with a cast iron steel plate.
The opposite side of described body of heater also is provided with fire door, and described stove car and light rail are respectively established a cover in the body of heater both sides.
Also have control of dust room and water collecting basin; The gas that described sintering oven and smelting furnace produce feeds earlier to feed behind the control of dust room depositing dust again and carries out desulfurization and dedusting in the desulfurizing dust-collector, and water is by the water collecting basin supply in the desulfurizing dust-collector, and the waste water of generation feeds recycle behind the water collecting basin again.
Positively effect of the present invention: (1) the present invention adopts sintering oven to come electroplating sludge is carried out sintering, make its water content reduce to 2%～5%, enter so again and do not need a lot of coke when carrying out melting in the smelting furnace, the dust that produces is lower, and very big to the treatment capacity of electroplating sludge, can work continuously; (2) sintering oven of the present invention adopts the machine automatic job fully, has avoided manually-operated danger, and has improved efficient, is provided with whipping appts on hopper, material can be stirred pulverize to enter sintering in the body of heater afterwards again, improves sintering efficient; (3) safety was discharged after desulfurizing dust-collector of the present invention can carry out the gas that produces in sintering oven and the smelting furnace desulfurization and dedusting; Can not exert an influence to environment.
Description of drawings
Fig. 1 is a process flow sheet of the present invention;
Fig. 2 is the structure iron of sintering oven of the present invention;
The structure iron of the sintering oven when Fig. 3 is use;
Fig. 4 is the structure iron of sintering oven stove car of the present invention;
Fig. 5 is the vertical view of Fig. 4;
Fig. 6 is the front view of sintering furnace body of the present invention;
Fig. 7 is the right view of sintering furnace body of the present invention;
Fig. 8 is the vertical view of sintering furnace body of the present invention;
Fig. 9 is the rear view of sintering furnace body of the present invention;
Figure 10 is the A-A sectional view of Fig. 6;
Figure 11 is the B-B sectional view of Figure 10;
Figure 12 is the structure iron of smelting furnace of the present invention;
Figure 13 is the structure iron of desulfurizing dust-collector of the present invention.
Among the figure, body of heater 11, fire door 11-1, hopper 11-2, rotary electric machine 11-3, rotation axis 11-3-1, rotating vane 11-3-2, steel plate loam cake 11-4, smoke outlet 11-5, chimney 11-5-1, viewing window 11-6, active plugboard 11-7, blast inlet 11-7-1, opening for feed 11-8, baffle plate 11-9, cast iron steel plate 11-10, stove car 12, car body 12-1, fire bars 12-2, wheel 12-3, rubbing board 12-4, drag hook 12-5, light rail 13, tractor 14, gas blower 15, body of heater 21, self-feeding ladder 22, alloy shaping box 23, shaft 21-1, the 21-1-1 of the shaft the superiors, one deck 21-1-2 in the middle of the shaft, shaft orlop 21-1-3, opening for feed 21-2, smoke outlet 21-3, alloy outlet 21-4, waste residue outlet 21-5, water-in 21-6, water port 21-7, advance mouth 31, smoke outlet 32, water-in 33, water outlet 34.
Embodiment
Referring to Fig. 1 to Figure 13, electroplating sludge treatment unit of the present invention comprises sintering oven 1, smelting furnace 2, desulfation dust-extraction device 3, control of dust room 4 and water collecting basin 5.
Sintering oven 1 comprises body of heater 11 and stove car 12, and the light rail 13 that cooperates stove car 12 to roll, and for the ease of continuous production, improves treatment capacity, and stove car 12 of the present invention and light rail 13 are provided with two covers, lay respectively at body of heater 11 both sides.The inboard of body of heater 11 adopts refractory materials to be built into, the Lower Half both sides respectively are provided with a cast iron steel plate 11-10, this cast iron steel plate 11-10 is high about 1 meter, about wide 0.2cm, because temperature is very high in the body of heater 11, particularly following 1 meter zone with material is provided with the damage that the cast iron steel plate can be avoided the refractory materials body of wall, and avoids body of wall and stove car to connect together.Also respectively there is a fire door 11-1 both sides of body of heater 11, the inboard refractory materials that adopts of fire door 11-1, and make with steel plate in the outside; Fire door 11-1 below respectively is provided with active plugboard 11-7, and active plugboard 11-7 is provided with blast inlet 11-7-1.Stove car 12 comprises car body 12-1 and wheel 12-2, have some fire bars 12-3 on the car body 12-1, car body 12-1 below also is provided with some rubbing board 12-4, also has a drag hook 12-5 on the stove car 12, be connected with tractor 14 by this drag hook 12-5, roll thereby drive stove car 12, fire bars 12-3 is a high temperature material, per 4 to 6 fire bars 12-3 are one group, place 10 to 15 groups according to the length of body of heater 11.
The steel plate loam cake 11-4 of body of heater 1 is provided with smoke outlet 11-5 and opening for feed 11-8, and smoke outlet 11-5 directly is connected the flue gas that will produce in the sintering process and discharges with chimney, and the below of smoke outlet 11-5 is provided with a plate washer 11-9, can avoid material to discharge with flue gas.Opening for feed 11-8 top has hopper 11-2, and hopper 11-2 one side is provided with rotary electric machine 11-3, and the rotation axis 11-3-1 of rotary electric machine 11-3 passes hopper 11-2 and is positioned at opening for feed 11-8 top.Hopper 11-2 of the present invention is provided with 2, mainly is because the length of body of heater is longer, reaches about 6 meters, only be provided with one, rotary electric machine just must also extend, and influences rotating speed of motor like this, therefore two hopper 11-2 and two rotary electric machine 11-3 are set, increase rotating speed.The rotating vane (11-3-2) of rotation axis (11-3-1) and opening for feed (11-8) adapt, and material can get off from opening for feed when rotating, and when stopping operating, the blade of rotary electric machine can cover opening for feed, thereby has stopped blanking.One side of body of heater 11 of the present invention has 2 to 4 viewing window 11-6.
Smelting furnace 2 comprises body of heater 21, self-feeding ladder 22 and alloy shaping box 23, body of heater 21 comprises shaft 21-1, opening for feed 21-2, smoke outlet 21-3, alloy outlet 21-4 and waste residue outlet 21-5, what shaft 21-1 adopted is high temperature material, shaft 21-1 is divided into three layers, has water-in 21-6 and water port 21-7 on middle one deck 21-1-2.
Desulfurizing dust-collector 3 comprises into mouth 31, smoke outlet 32, water-in 33 and water outlet 34.
The technology of processing electroplating sludge of the present invention is as follows:
The electroplating sludge material of water content more than 75% carried out chemical analysis, the Classification of materials after analyzing is stacked carried out drying, can directly material be placed the glass threshing ground to carry out drying during summer, then need in the cylinder stoving oven, carry out drying during winter.
The water content of process exsiccant electroplating sludge material is preferably in 50%～55% generally 40%～65%.At this moment add the coal mixing and stirring in material, the add-on of coal is to make the weight percentage of coal in mixture reach 6%.
Open a fire door 11-1 of sintering oven 1, another fire door is closed, and by tractor 14 stove car 12 is sent in the body of heater 11, closes this fire door 11-1 after active plugboard 11-7 is plugged.Electroplating sludge is added from hopper 11-2, and start rotary electric machine 11-3, drop down onto on the stove car 12 after electroplating sludge being become be fit to the lumphy structure of opening for feed 11-8 size, when stopping to stir, thereby rotating vane can cover opening for feed and stops blanking automatically.Make sludge incineration in igniting from viewing window 11-6, simultaneously that body of heater 11 is other gas blower 14 is connected with the blast inlet on the active plugboard, makes sufficient combustion.
In sintering process, the gas of generation feeds the control of dust room 4 from chimney 11-5-1 by smoke outlet 11-5, is provided with a plate washer 11-9 and can prevents that material is along with gas is discharged together below smoke outlet 11-5.
When the water content of material reduces to 2%～5%, stop sintering, open fire door 11-1, the stove car 12 that material will be housed by tractor 14 involves body of heater 11.
Enter the intact material afterwards of sintering in the body of heater 21 of smelting furnace 2 along self-feeding ladder 22, melting in the bottom one deck 21-1-3 of the shaft 21-1 that makes it at body of heater 21, and in water-in 21-6, feeding the temperature that water reduces body of heater 21, the gas that produces in the fusion process feeds the control of dust room 4 from smoke outlet 21-3.After melting finishes waste residue is discharged from waste residue outlet 21-5, metal alloy is entered alloy shaping box 23 from alloy outlet 21-4 refine separation.
To enter and carry out desulfurization and dedusting in the desulfurizing dust-collector 3 through the mouth 31 that advances of the gas behind the depositing dust in the control of dust room 4 by desulfurizing dust-collector 3, desulfurizing dust-collector 3 integrated granite materials, structure is a double-cylinder type, technological principle is two alkaline process, adopt soda ash to absorb sulfur dioxide gas, the Wingdale reducing/regenerating, regeneration back recirculation is used and is absorbed sulfurous gas, so desulfuration efficiency can reach 90%.The sewage that generates in the reaction process enters the water collecting basin 5 from water outlet 34, water collecting basin 5 comprises three ponds 51,52,53, sewage carries out pond 52 through pond 51 post precipitations to be handled, and the water that enters pond 53 at last can recycle in the water-in 33 supply desulfurizing dust-collectors 3 again.Qualified gas behind the desulfurization and dedusting is discharged from smoke outlet 32 and is carried out discharging from flue after pocket type gathers dust.
Claims (10)
1, a kind of treatment process of electroplating sludge is characterized in that having the following step:
1. being that electroplating sludge material more than 75% carries out drying with water content, is 40%～65% until the water content of material;
2. dried material and coal are mixed, the weight of described coal is 5～7% of mixture total weight amount, mixture is added in the sintering oven (1) carry out sintering, and be 2%～5% until the water content of material; The gas that produces in the sintering carries out discharging behind the desulfurization and dedusting from smoke outlet (11-5) the feeding desulfurizing dust-collector (3) of sintering oven (1);
3. the material behind the sintering is added in the smelting furnace (2) and carry out melting; The gas that produces in the melting carries out discharging behind the desulfurization and dedusting from smoke outlet (21) the feeding desulfurizing dust-collector (3) of smelting furnace (2);
4. the material after the melting is refined separation, promptly obtain metal alloy.
2, the treatment process of electroplating sludge according to claim 1 is characterized in that: the drying of step described in 1. is for carrying out drying or dry in the cylinder stoving oven in the glass threshing ground, dried material moisture is 50%～55%.
3, the treatment process of electroplating sludge according to claim 1 is characterized in that: the weight of the coal of step described in 2. is 6% of mixture total weight amount.
4, the treatment process of electroplating sludge according to claim 1, it is characterized in that: the sintering oven (1) of step described in 2. comprises body of heater (11), stove car (12) and the light rail (13) that cooperates stove car (12) to roll, described body of heater (11) has the active plugboard (11-7) of fire door (11-1), opening for feed (11-8), smoke outlet (11-5), 2 to 4 viewing windows (11-6) and fire door (11-1) below, and described active plugboard (11-7) is provided with blast inlet (11-7-1);
The agglomerating step is as follows:
(1) stove car (12) is sent into body of heater (11) along light rail (3), plug active plugboard (11-7), close fire door (11-1);
(2) with after the drying and the electroplating sludge material that is mixed with coal join on the stove car (12) from opening for feed (11-8), from viewing window (11-6), mix back igniting sintering thoroughly;
(3) introduce hot blast in blast inlet (11-7-1), the gas of generation feeds the desulfurizing dust-collector (3) from smoke outlet (115);
(4) when the water content of material reduces to 2%～5%, stop sintering, the stove car (12) that material is housed is involved body of heater (11).
5, the treatment process of electroplating sludge according to claim 4, it is characterized in that: described opening for feed (11-8) is some oblong shaped orifices, opening for feed (11-8) is provided with hopper (11-2), be provided with rotary electric machine (11-3) in hopper (11-2) side, the rotation axis (11-3-1) of described rotary electric machine (11-3) passes described hopper (11-2) and is positioned on the described opening for feed (11-8), and the rotating vane (11-3-2) of rotation axis (11-3-1) adapts with the aperture of opening for feed (1-8);
Being incorporated as of material in the agglomerating step (two): with after the drying and the electroplating sludge material that is mixed with coal join in the hopper (11-2), start agitator motor (11-3), make material stirring powder essence, fall into from opening for feed (11-8) on the stove car (12), the rotary electric machine (3) that finishes afterwards makes rotating vane (11-3-2) cover opening for feed (11-8) and goes up and avoid the material whereabouts.
6, a kind of device of electroplating sludge processing, have smelting furnace (2) and desulfurizing dust-collector (3), the gas that smelting furnace (2) produces is discharged after by desulfurizing dust-collector (3) desulfurization and dedusting, it is characterized in that: also have sintering oven (1), the sintered material of described sintering oven (1) adds in the smelting furnace (2) and carries out melting, and the gas that described sintering oven (1) produces is discharged after by desulfurizing dust-collector (3) desulfurization and dedusting; Described sintering oven (1) comprises body of heater (11), stove car (12) and the light rail (13) that cooperates stove car (12) to roll, described body of heater (11) has the active plugboard (11-7) of fire door (11-1), opening for feed (11-8), smoke outlet (11-5), 2 to 4 viewing windows (11-6) and fire door (11-1) below, and described active plugboard (11-7) is provided with blast inlet (11-7-1).
7, the device of electroplating sludge processing according to claim 6, it is characterized in that: described opening for feed (11-8) is some oblong shaped orifices, opening for feed (11-8) is provided with hopper (11-2), be provided with rotary electric machine (11-3) in hopper (11-2) side, the rotation axis (11-3-1) of described rotary electric machine (11-3) passes described hopper (11-2) and is positioned on the described opening for feed (11-8), and the rotating vane (11-3-2) of rotation axis (11-3-1) adapts with the aperture of opening for feed (1-8).
8, the device of electroplating sludge processing according to claim 6, it is characterized in that: described stove car (12) comprises car body (12-1) and wheel (12-3), have some fire bars (12-2) on the car body (12-1), car body (12-1) below has rubbing board (12-4); The below of described smoke outlet (11-5) is provided with a baffle plate (11-9); Described body of heater (11) inwall both sides respectively are provided with a cast iron steel plate (11-10).
9, the device of electroplating sludge processing according to claim 6, it is characterized in that: the opposite side of described body of heater (11) also is provided with fire door (11-1), and described stove car (12) and light rail (13) are respectively established a cover in body of heater (11) both sides.
10, the device of electroplating sludge processing according to claim 6 is characterized in that: also have control of dust room (4) and water collecting basin (5); Feed again in the desulfurizing dust-collector (3) behind gas elder generation feeding control of dust room (4) depositing dust that described sintering oven (1) and smelting furnace (2) produce and carry out desulfurization and dedusting, water is by water collecting basin (5) supply in the desulfurizing dust-collector (3), and the waste water of generation feeds water collecting basin (5) back recycle again.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100216260A CN100497678C (en) | 2007-04-18 | 2007-04-18 | Technique and equipment for treating electroplating sludge |
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|---|---|---|---|
| CNB2007100216260A CN100497678C (en) | 2007-04-18 | 2007-04-18 | Technique and equipment for treating electroplating sludge |
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| CN101092662A true CN101092662A (en) | 2007-12-26 |
| CN100497678C CN100497678C (en) | 2009-06-10 |
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| CNB2007100216260A Expired - Fee Related CN100497678C (en) | 2007-04-18 | 2007-04-18 | Technique and equipment for treating electroplating sludge |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104152682A (en) * | 2014-09-04 | 2014-11-19 | 重庆瑞帆再生资源开发有限公司 | Method for harmlessly treating electroplating sludge in metallurgical sintering blast furnace |
| CN104342556A (en) * | 2013-08-06 | 2015-02-11 | 沈志良 | Method for extracting copper or nickel from copper or nickel-contained sludge |
| CN106191451A (en) * | 2016-08-26 | 2016-12-07 | 云南省固体废物管理中心 | A kind of efficient low-consume processes the device of zinc abstraction mud |
| CN106222407A (en) * | 2016-08-05 | 2016-12-14 | 宁波金特信钢铁科技有限公司 | A kind of preparation method of high-temperature resistant shaped memory metal-rubber |
| CN111574003A (en) * | 2019-11-11 | 2020-08-25 | 宁波双能环保科技有限公司 | Hazardous waste recycling method |
| CN111686634A (en) * | 2020-07-20 | 2020-09-22 | 湖北中环信环保科技有限公司 | Batching system of sintering material of copper-nickel-containing solid waste |
| CN113695052A (en) * | 2021-08-27 | 2021-11-26 | 中野环保科技(重庆)股份有限公司 | Pretreatment method and device for dangerous electroplating sludge from social source |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT370138B (en) * | 1981-03-05 | 1983-03-10 | Voest Alpine Ag | METHOD FOR RECOVERING HEAVY METALS |
| CN100506727C (en) * | 2005-07-11 | 2009-07-01 | 台州盛世环境工程有限公司 | Resource recovery process of galvanizing sludge |
| CN201024130Y (en) * | 2007-04-18 | 2008-02-20 | 吴显荣 | Electroplating sludge treatment device |
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- 2007-04-18 CN CNB2007100216260A patent/CN100497678C/en not_active Expired - Fee Related
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| CN104342556A (en) * | 2013-08-06 | 2015-02-11 | 沈志良 | Method for extracting copper or nickel from copper or nickel-contained sludge |
| CN104342556B (en) * | 2013-08-06 | 2017-06-30 | 沈志良 | A kind of method that copper or nickel are extracted from cupric or nickel sludge |
| CN104152682A (en) * | 2014-09-04 | 2014-11-19 | 重庆瑞帆再生资源开发有限公司 | Method for harmlessly treating electroplating sludge in metallurgical sintering blast furnace |
| CN104152682B (en) * | 2014-09-04 | 2016-03-02 | 重庆瑞帆再生资源开发有限公司 | A kind of method utilizing metallurgy sintered blast furnace harmless treatment electroplating sludge |
| CN106222407A (en) * | 2016-08-05 | 2016-12-14 | 宁波金特信钢铁科技有限公司 | A kind of preparation method of high-temperature resistant shaped memory metal-rubber |
| CN106191451A (en) * | 2016-08-26 | 2016-12-07 | 云南省固体废物管理中心 | A kind of efficient low-consume processes the device of zinc abstraction mud |
| CN106191451B (en) * | 2016-08-26 | 2017-12-15 | 云南省固体废物管理中心 | A kind of device of efficient low-consume processing zinc abstraction sludge |
| CN111574003A (en) * | 2019-11-11 | 2020-08-25 | 宁波双能环保科技有限公司 | Hazardous waste recycling method |
| CN111574003B (en) * | 2019-11-11 | 2022-03-04 | 宁波双能环保科技有限公司 | Hazardous waste recycling method |
| CN111686634A (en) * | 2020-07-20 | 2020-09-22 | 湖北中环信环保科技有限公司 | Batching system of sintering material of copper-nickel-containing solid waste |
| CN113695052A (en) * | 2021-08-27 | 2021-11-26 | 中野环保科技(重庆)股份有限公司 | Pretreatment method and device for dangerous electroplating sludge from social source |
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