CN108373249A - A kind of high chlorine iron content waste sludge resource utilization method and its processing system - Google Patents
A kind of high chlorine iron content waste sludge resource utilization method and its processing system Download PDFInfo
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- CN108373249A CN108373249A CN201810237963.1A CN201810237963A CN108373249A CN 108373249 A CN108373249 A CN 108373249A CN 201810237963 A CN201810237963 A CN 201810237963A CN 108373249 A CN108373249 A CN 108373249A
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- iron content
- solid
- high chlorine
- liquid
- waste
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/203—Iron or iron compound
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of high chlorine iron content waste sludge resource utilization method and its processing system, the method is that high chlorine iron content waste sludge is gone out solid ferruginous material and liquid by wet separation, and liquid sintering inhibits powdering agent to carry out recycling.The characteristic that the present invention is high according to waste pickling sludge itself iron content, chloride ion content is high, wet separation goes out solid ferruginous material and liquid sintering inhibits powdering agent, recycling is carried out respectively, the processing cost of waste is not only saved, and in waste TFe and chlorion be changed into valuable resource and utilized, technological process is short, equipment is simple, is generated again without secondary waste object, realizes the real recycling of waste pickling sludge.
Description
Technical field
The invention belongs to environmental protection technical fields, and in particular to a kind of high chlorine iron content waste sludge resource utilization method
And its processing system.
Background technology
In order to make steel or stainless steel show neatly, using hydrochloric acid or hydrochloric mix acid liquor to steel or stainless steel
Material carries out acid pickling and rust removing, generates pickle liquor.Pickle liquor is handled generally by way of coagulating sedimentation.What coagulating sedimentation generated
Sludge or the mud cake generated through press filtration are a kind of high chlorine iron-contained waste materials.Such waste generates at the most pyrogenic process of unit at present
Reason.
Application No. is 201110111921.1 patents《A kind of side of steel and iron industry cold-rolling pickling wastewater mud decrement processing
Method》One kind has been invented by accurately adding chemical agent to the completely separable disposition in water source and unit to cut down sludge yield, has been reduced
The method of ton cost of water treatment.
The patent of application number 200680038611.8《The processing method and processing unit of chlorine-containing waste》One kind is invented
By washing filtering mode, chlorine-containing waste is separated into liquid and solid.Solid is used as cement raw material, and liquid is using chemistry
Reaction, flocculation sediment, evaporation, crystallization, dry acquisition KCl, precipitated impurities are used as cement raw material.The purpose of invention is removal cement
The harmful effect that chlorine-containing waste generates cement quality or quality coal in cement kiln systems operation in production.
Application No. is 201410523633.0 patents《The method of cement is produced using pickling sludge and utilizes pickling sludge
The cement of production》A kind of method and utilization pickling sludge producing cement by being incorporated pickling sludge in cement raw material is invented
The cement of production.The purpose of invention is to provide a kind of recycling approach of the pickling sludge as manufacture of cement.
Application No. is 200810024330.9 patents《Acid washing iron red desilication filter cake treating device and processing method》Invention
It is a kind of so that acid washing iron red desilication filter cake is decomposed the device handled, the processing side that is used by the processing unit by heating
Method can get Iron concentrate and technical hydrochloric acid.
Existing treatment technology to pickling sludge using be using it as a kind of raw material of no benefit be incorporated on a small quantity cement give birth to
In production.Or technical hydrochloric acid is recycled by pyrolytic again on the basis of former treatment process, complex process consumes the energy.
Invention content
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, present invention offer is a kind of high
Chlorine iron content waste sludge resource utilization method and its processing system, it is therefore an objective to according to waste self-characteristic, pass through wet method pair
Waste is detached, and is valuably utilized according to isolate different role, realizes the real recycling of waste.
To achieve the goals above, the technical solution that the present invention takes is：
A kind of high chlorine iron content waste sludge resource utilization method, the method be high chlorine iron content waste sludge is passed through it is wet
Method isolates solid ferruginous material and liquid, and liquid sintering inhibits powdering agent to carry out recycling.
Preferably, solid ferruginous material is used as smelting iron or making steel raw materials for sintering.
Main technique of the present invention is as follows：
Hazardous waste → slurrying → separation → utilization.
Preferably, the method specifically comprises the following steps：
1) high chlorine iron-contained waste material pickling sludge is added into water and calcium lime powder mixed pulp；
2) slurries are detached；
3) solid and solution isolated store use respectively.
Waste pickling sludge and the mass ratio of water and calcium lime powder are 1 in the step 1):5~50：0.1~1.
In step 1), hybrid reaction formula is：
Ca(OH)2+2HCl→CaCl2+2H2O
Ca(OH)2+FeCl2→CaCl2+Fe(OH)2Or
Ca(OH)2+FeCl3→CaCl2+Fe(OH)3
The mass percent that the pH value of waste pickling sludge is 3~6, TFe in the step 1) is 35%~55%, Cl
Mass of ion percentage is 5%~26%.The time of mixing is preferably 10~30 minutes.
Mixed liquor pH value in the step 1) after mixed pulp is 7~12.
Slurries press filtration is detached using plate and frame filter press in the step 2), press filtration pressure is 1.0MPa~2.0MPa.
The solid isolated in the step 2) is ferric charge, and TFe mass percents are 45%~68%, Cl mass of ions
Percentage is less than 1%.Direct vehicle fortune, is used as ironmaking or steelmaking feed.
The solution isolated in the step 2) is CaCl2Solution inhibits powdering agent to carry out spray and shines use as sintering.
In step 3), if remaining CaCl in solid2Solution is more, and water filling slurrying carries out secondary separation.
The present invention also provides a kind of processing system of high chlorine iron content waste sludge, include for mixed pulp blending tank and
The first blender in blending tank, the processing system further include making the first filter press of separation of solid and liquid for press filtration, using
In store the first fluid storage tanks of the liquid isolated of the first filter press, for storing solid that the first filter press is isolated
Solid storage storehouse and for by blending tank slurries import the first filter press the first delivery pump.
The processing system further includes the second filter press, is received for storing the solid for the solid that the second filter press is isolated
Vehicle, the second liquid holding vessel for storing the liquid that the second filter press is isolated and for importing consolidating in solid storage storehouse
Slurries in stirring pool are imported the second filter press by the second delivery pump, passed through by the stirring pool that body carries out plus water is stirred
Liquid in second liquid holding vessel is imported blending tank by third delivery pump.
Beneficial effects of the present invention：The spy that the present invention is high according to waste pickling sludge itself iron content, chloride ion content is high
Property, wet separation goes out solid ferruginous material and liquid sintering inhibits powdering agent, carries out recycling respectively, has not only saved discarded
The processing cost of object, and in waste TFe and chlorion be changed into valuable resource and utilized, technological process
It is short, equipment is simple, is generated again without secondary waste object, realize the real recycling of waste pickling sludge.On the one hand
Waste external treatment cost, while the CaCl produced are saved2Solution is inhibiting powdering agent for sintering ore, can be inside steel mill
It uses, with good economic efficiency and social benefit.
Description of the drawings
This specification includes the following drawings, and shown content is respectively：
Fig. 1 is the process flow chart of the present invention.
In figure label for：
1, blending tank, the 2, first blender, the 3, first filter press 4, the first liquid storage tank, 5, solid storage warehouse, 6,
One delivery pump, the 7, second filter press, 8, second liquid holding vessel, 9, solid receive vehicle, 10, stirring pool, the 11, second blender,
12, the second delivery pump, 13, third delivery pump.
Specific implementation mode
Below against attached drawing, by the description of the embodiment, making to the specific implementation mode of the present invention further details of
Explanation, it is therefore an objective to those skilled in the art be helped to have more complete, accurate and deep reason to the design of the present invention, technical solution
Solution, and contribute to its implementation.
As shown in Figure 1, a kind of processing system of high chlorine iron content waste sludge, includes 1 He of blending tank for mixed pulp
The first blender 2 in blending tank 1, the processing system further include making the first filter press 3 of separation of solid and liquid for press filtration, using
In storing the first fluid storage tanks 4 of the liquid isolated of the first filter press 3, consolidate for store that the first filter press 3 isolates
The solid storage storehouse 5 of body and for by blending tank 1 slurries import the first filter press 3 the first delivery pump 6.
If remaining CaCl in solid2Solution is more, and water filling slurrying is needed to carry out secondary separation, and above-mentioned processing system further includes the
Two filter presses 7 receive vehicle 8 for storing the solid for the solid that the second filter press 7 is isolated, divide for storing the second filter press 7
The second liquid holding vessel 9 of the liquid separated out and for the solid in solid storage storehouse 5 to carry out plus water is stirred to importing
Slurries in stirring pool 10 are imported the second filter press 7 by stirring pool 10 by the second delivery pump 12, will by third delivery pump 13
Liquid in second liquid holding vessel 9 imports blending tank 1.Dangerous waste pickling sludge is done in the liquid return that solid washing press filtration generates
Slurrying water；And then the liquid for recycling and isolating is formed, resource is saved, equipment is simple, realizes waste pickling sludge
Real recycling.The pressure of above-mentioned pumping is preferably 0.5MPa~1.0MPa.
Using above system so that high chlorine iron content waste sludge recycling, method are that the method is to contain high chlorine
Iron waste sludge goes out solid ferruginous material and liquid by wet separation, and liquid sintering inhibits powdering agent to carry out recycling.Gu
Body ferric charge is used as smelting iron or making steel raw materials for sintering.The processing cost of waste is not only saved, but also the TFe in waste
It is changed into valuable resource with chlorion to be utilized, technological process is short, generates again without secondary waste object, realizes discarded
The real recycling of object pickling sludge.
Preferably, the above method specifically comprises the following steps：
1) high chlorine iron-contained waste material pickling sludge is added into water and calcium lime powder mixed pulp；Wherein, waste pickling sludge
PH value be 3~6, TFe mass percent be 35%~55%, Cl mass of ion percentages be 5%~26%；Waste acid
Sludge is washed with water, calcium lime powder according to mass ratio 1:(5~50)：(0.1~1) is mixed 10~30 minutes.After mixed pulp
Mixed liquor pH value be 7~12.
2) slurries are separated into solid and liquid after plate and frame filter press pressure；Press filtration pressure is 1.0MPa~2.0MPa.Point
The solid separated out is ferric charge, and TFe mass percents are that 45%~68%, Cl mass of ion percentages are less than 1%.
3) solid and solution isolated store use respectively；Solid is ironmaking or steelmaking feed, liquid CaCl2Solution
It is that sintering inhibits powdering agent, directly uses.
If remaining CaCl in solid2Solution is more, passes through the water filling slurrying progress secondary separation in above system.
It is described in detail below by specific embodiment：
Embodiment 1
A. the waste pickling sludge that be 44.38% by TFe mass percents, Cl mass of ion percentages are 10.69%
With water, calcium lime powder according to mass ratio 1：5：0.1 is mixed slurrying in 20 minutes；
B. slurries are detached through plate and frame filter press 1.6MPa press filtrations.The solid TFe mass percents isolated are
66.10%, chlorine ions percentage is 0.81%, by automotive to iron making and sintering factory, is used as blast furnace ironmaking raw material；It isolates
Liquid be predominantly sintered and inhibit powdering agent CaCl2Solution, a concentration of 18.86mg/L, directly shipment to sintered ore for iron-smelting are carried out
Sprinkling uses.
Embodiment 2
A. the waste pickling sludge that be 40.42% by TFe mass percents, Cl mass of ion percentages are 21.36%
With water, calcium lime powder according to mass ratio 1：20：0.4 is mixed slurrying in 25 minutes；
B. slurries are detached through plate and frame filter press 1.2MPa press filtrations.The liquid isolated, which is predominantly sintered, inhibits powdering agent
CaCl2Solution, chlorine ion concentration 46.87mg/l, directly shipment to sintered ore for iron-smelting carry out sprinkling use；
C. TFe mass percents are 51.35% in the solid isolated, chlorine ions percentage is 2.48%, then passes through
Secondary washing, press filtration are crossed, solid TFe mass percents are 55.38%, chlorine ions percentage is 0.94%, pass through automotive
To iron making and sintering factory, it is used as blast furnace ironmaking raw material；The liquid isolated, which returns, is used as waste pickling sludge slurrying water.
The present invention is exemplarily described above in association with attached drawing.Obviously, present invention specific implementation is not by above-mentioned side
The limitation of formula.As long as using the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress；Or not
It is improved, the above-mentioned design of the present invention and technical solution are directly applied into other occasions, in protection scope of the present invention
Within.
Claims (10)
1. a kind of high chlorine iron content waste sludge resource utilization method, which is characterized in that the method is to discard high chlorine iron content
Sludge goes out solid ferruginous material and liquid by wet separation, and liquid sintering inhibits powdering agent to carry out recycling.
2. high chlorine iron content waste sludge resource utilization method according to claim 1, which is characterized in that the method is specific
Include the following steps：
1) high chlorine iron-contained waste material pickling sludge is added into water and calcium lime powder mixed pulp；
2) slurries are detached；
3) solid and solution isolated store use respectively.
3. high chlorine iron content waste sludge resource utilization method according to claim 2, which is characterized in that in the step 1)
Waste pickling sludge is 1 with the mass ratio of water and calcium lime powder:5~50：0.1~1.
4. high chlorine iron content waste sludge resource utilization method according to claim 2, which is characterized in that in the step 1)
The mass percent that the pH value of waste pickling sludge is 3~6, TFe is that 35%~55%, Cl mass of ion percentages are 5%
~26%.
5. high chlorine iron content waste sludge resource utilization method according to claim 2, which is characterized in that in the step 1)
Mixed liquor pH value after mixed pulp is 7~12.
6. high chlorine iron content waste sludge resource utilization method according to claim 2, which is characterized in that in the step 2)
Slurries press filtration is detached using plate and frame filter press, press filtration pressure is 1.0MPa~2.0MPa.
7. high chlorine iron content waste sludge resource utilization method according to claim 2, which is characterized in that in the step 2)
The solid isolated is ferric charge, and TFe mass percents are that 45%~68%, Cl mass of ion percentages are less than 1%.
8. high chlorine iron content waste sludge resource utilization method according to claim 2, which is characterized in that in the step 2)
The solution isolated is CaCl2Solution inhibits powdering agent to carry out spray and shines use as sintering.
9. a kind of processing system of high chlorine iron content waste sludge, includes for the blending tank of mixed pulp and in blending tank
First blender, it is characterised in that：The processing system further includes making the first filter press of separation of solid and liquid, for depositing for press filtration
The first fluid storage tanks for storing up the liquid that the first filter press is isolated, the solid for storing the solid that the first filter press is isolated
Storage warehouse and for by blending tank slurries import the first filter press the first delivery pump.
10. the processing system of high chlorine iron content waste sludge according to claim 9, it is characterised in that：The processing system is also
Vehicle is received including the second filter press, for storing the solid for the solid that the second filter press is isolated, for storing the second filter press
The second liquid holding vessel for the liquid isolated and for the solid in solid storage storehouse to carry out plus water is stirred to importing
Slurries in stirring pool are imported the second filter press, by third delivery pump by second liquid by stirring pool by the second delivery pump
Liquid in holding vessel imports blending tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810237963.1A CN108373249B (en) | 2018-03-22 | 2018-03-22 | Resource utilization method and treatment system for high-chlorine iron-containing waste sludge |
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| CN201810237963.1A CN108373249B (en) | 2018-03-22 | 2018-03-22 | Resource utilization method and treatment system for high-chlorine iron-containing waste sludge |
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| CN108373249B CN108373249B (en) | 2021-03-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111394581A (en) * | 2020-04-30 | 2020-07-10 | 舒新前 | Method for removing harmful components in iron-containing solid waste |
| CN113023989A (en) * | 2021-03-13 | 2021-06-25 | 宝钢湛江钢铁有限公司 | Method for treating silicon-containing sludge by using wastewater zero discharge system |
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|---|---|---|---|---|
| US5102556A (en) * | 1990-03-30 | 1992-04-07 | Union Oil Company Of California | Method for rendering ferric hydroxide sludges recyclable |
| CN102051475A (en) * | 2009-11-04 | 2011-05-11 | 饶文涛 | Method for recycling acid-washed iron-containing sludge |
| CN205115245U (en) * | 2015-11-05 | 2016-03-30 | 杨文杰 | Mud zero release processing system |
| CN106116004A (en) * | 2016-08-09 | 2016-11-16 | 天津正达科技有限责任公司 | A kind of steel hydrochloric acid pickling effluent resource reclaims and the processing method of zero-emission |
-
2018
- 2018-03-22 CN CN201810237963.1A patent/CN108373249B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5102556A (en) * | 1990-03-30 | 1992-04-07 | Union Oil Company Of California | Method for rendering ferric hydroxide sludges recyclable |
| CN102051475A (en) * | 2009-11-04 | 2011-05-11 | 饶文涛 | Method for recycling acid-washed iron-containing sludge |
| CN205115245U (en) * | 2015-11-05 | 2016-03-30 | 杨文杰 | Mud zero release processing system |
| CN106116004A (en) * | 2016-08-09 | 2016-11-16 | 天津正达科技有限责任公司 | A kind of steel hydrochloric acid pickling effluent resource reclaims and the processing method of zero-emission |
Non-Patent Citations (1)
| Title |
|---|
| 伍国强: "不锈钢酸洗废水的化学还原沉淀法处理", 《环境工程》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111394581A (en) * | 2020-04-30 | 2020-07-10 | 舒新前 | Method for removing harmful components in iron-containing solid waste |
| CN113023989A (en) * | 2021-03-13 | 2021-06-25 | 宝钢湛江钢铁有限公司 | Method for treating silicon-containing sludge by using wastewater zero discharge system |
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| CN108373249B (en) | 2021-03-12 |
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Address after: 243003 8 Jiuhua Road, Yushan, Ma'anshan, Anhui Applicant after: Ma'anshan Iron and Steel Co., Ltd. Address before: 243003 intellectual property department, technology center, No. 8 Hunan West Road, Yushan, Ma'anshan, Anhui Applicant before: Ma'anshan Iron and Steel Co., Ltd. |
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