CN105907955A - Inorganic binder for oxidized pellets and manufacturing method - Google Patents
Inorganic binder for oxidized pellets and manufacturing method Download PDFInfo
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- CN105907955A CN105907955A CN201610440485.5A CN201610440485A CN105907955A CN 105907955 A CN105907955 A CN 105907955A CN 201610440485 A CN201610440485 A CN 201610440485A CN 105907955 A CN105907955 A CN 105907955A
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- dolomite
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- inorganic binder
- lime
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
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- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses an inorganic binder for oxidized pellets and a manufacturing method. The inorganic binder for oxidized pellets comprises, by mass, 50%-65% of metallurgy sewage plant sludge, 20%-25% of active lime, 5%-10% of limestone, 5%-10% of dolomite, 1%-2% of sodium lignin sulfonate, and 0.1%-1% of polyacrylamide with the molecular weight being 30000-50000. The water content of the metallurgy sewage plant sludge is larger than or equal to 80%, and the sulfur content is smaller than 0.30%. The content of calcium oxide in the active lime is larger than or equal to 90%, and the sulfur content is smaller than 0.10%. The content of calcium carbonate in the limestone is larger than or equal to 50%, and the sulfur content is smaller than 0.10%. The content of magnesium carbonate in the dolomite is larger than or equal to 60%, and the sulfur content is smaller than 0.10%. The binder disclosed by the invention can be directly used for a ferrous metallurgy production system, and does not need to be matched with other additives for use, the reaction speed is high, efficiency is high and the binding effect is good. Moreover, the content of the metallurgy sewage plant sludge in the binder exceeds 50%, and thus the sludge treatment problem of enterprises is solved.
Description
Technical field
The present invention relates to technical field of steel production, particularly relate to a kind of acid pellet inorganic binder and system
Make method.
Background technology
Acid pellet is one of important method of agglomeration of fine ore.The binding agent that regular oxidation pelletizing uses, mostly is
Purifying bentonite, the secondary pollution produced in raw material production process is more serious, and to acid pellet
Later stage performance has considerable influence.
Traditional organic binder bond also need to arrange in pairs or groups other additives with the use of, bond effect is poor, serious shadow
Production and the pollution emission reduction of iron and steel metallurgy enterprise are rung.
Summary of the invention
The application provides a kind of acid pellet inorganic binder and manufacture method, solves oxygen in prior art
Pellet uses purifying bentonite as binding agent, pollutes more serious, the technical problem of bond effect difference.
The application provides a kind of acid pellet inorganic binder, the group of described acid pellet inorganic binder
The mass percent divided is: metallurgic sewage factory mud 50%～65%, active lime 20%～25%, stone
Lime stone 5%～10%, dolomite 5%～10%, sodium lignin sulfonate 1%～2%, molecular weight be 30000～
50000 polyacrylamides 0.1～1%, wherein, described metallurgic sewage factory sludge moisture content >=80%, sulfur-bearing
Amount is less than 0.30%；Calcium oxide >=90% of described active lime, sulfur content are less than 0.10%；Described lime
Calcium carbonate >=50% of stone, sulfur content are less than 0.10%；Magnesium carbonate >=60% of described dolomite, sulfur content are little
In 0.10%.
Preferably, described dolomite is 1:1 with the incorporation mass ratio of described lime stone.
Preferably, described sodium lignin sulfonate is 2:1 with the incorporation mass ratio of described polyacrylamide.
The application also provides for the manufacture method of a kind of above-mentioned acid pellet inorganic binder, is used for manufacturing described
Binding agent, described manufacture method includes:
By described sewage plant sludge, described active lime, described lime stone, described dolomite, described wooden
Element sodium sulfonate, described polyacrylamide measure in proportion and weigh；
Described sewage plant sludge after weighing, described active lime, described lime stone, described dolomite,
Described sodium lignin sulfonate, described polyacrylamide mix with water, form the slurry that water content is 20%, it is thus achieved that
Described acid pellet inorganic binder.
The application has the beneficial effect that:
The application utilize metallurgic sewage factory mud, active lime, lime stone, dolomite, sodium lignin sulfonate,
Polyacrylamide is made into compound binding agent, can be directly used for Ferrous Metallurgy production system, and i.e. this bonding knot agent can be single
Solely using, other additive need not be coordinated to use, reaction speed is fast, and efficiency is high, and bond effect is preferable；
It addition, the content of the metallurgic sewage factory mud of the application binding agent is more than 50%, it is dirty that this not only solves enterprise
The process problem of mud, also achieves the reasonable development of secondary resource simultaneously, and the solid that improve iron and steel system gives up
Gurry efficiency, reduces disposal of pollutants, and the use of this binding agent simultaneously greatly reduces iron and steel enterprise's raw material amount,
Decrease secondary pollution, improve green-ball taste, reduce production cost, solve oxidation ball in prior art
Group uses purifying bentonite as binding agent, pollutes more serious, the technical problem of bond effect difference.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example description, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only
It is only some embodiments of the present invention.
Fig. 1 is the flow process of the manufacture method of the application better embodiment a kind of acid pellet inorganic binder
Figure.
Detailed description of the invention
The embodiment of the present application, by providing a kind of acid pellet inorganic binder and manufacture method, solves existing
There is acid pellet in technology to use purifying bentonite as binding agent, pollute more serious, bond effect difference
Technical problem.
Technical scheme in the embodiment of the present application is for solving above-mentioned technical problem, and general thought is as follows:
A kind of acid pellet inorganic binder, the quality hundred of the component of described acid pellet inorganic binder
Proportion by subtraction is: metallurgic sewage factory mud 50%～65%, active lime 20%～25%, lime stone 5%～10%,
Dolomite 5%～10%, sodium lignin sulfonate 1%～2%, molecular weight are 30000～50000 polypropylene
Acid amides 0.1～1%, wherein, described metallurgic sewage factory sludge moisture content >=80%, sulfur content are less than 0.30%；
Calcium oxide >=90% of described active lime, sulfur content are less than 0.10%；Calcium carbonate >=50% of described lime stone,
Sulfur content is less than 0.10%；Magnesium carbonate >=60% of described dolomite, sulfur content are less than 0.10%.
The application utilize metallurgic sewage factory mud, active lime, lime stone, dolomite, sodium lignin sulfonate,
Polyacrylamide is made into compound binding agent, can be directly used for Ferrous Metallurgy production system, and i.e. this bonding knot agent can be single
Solely using, other additive need not be coordinated to use, reaction speed is fast, and efficiency is high, and bond effect is preferable；
It addition, the content of the metallurgic sewage factory mud of the application binding agent is more than 50%, it is dirty that this not only solves enterprise
The process problem of mud, also achieves the reasonable development of secondary resource simultaneously, and the solid that improve iron and steel system gives up
Gurry efficiency, reduces disposal of pollutants, and the use of this binding agent simultaneously greatly reduces iron and steel enterprise's raw material amount,
Decrease secondary pollution, improve green-ball taste, reduce production cost, solve oxidation ball in prior art
Group uses purifying bentonite as binding agent, pollutes more serious, the technical problem of bond effect difference.
In order to be better understood from technique scheme, below in conjunction with Figure of description and concrete embodiment party
Technique scheme is described in detail by formula.
Use purifying bentonite as binding agent to solve acid pellet in prior art, pollute the tightest
The technical problem of weight, bond effect difference, the application provides a kind of acid pellet inorganic binder.
The mass percent of the component of described acid pellet inorganic binder is: metallurgic sewage factory mud
50%～65%, active lime 20%～25%, lime stone 5%～10%, dolomite 5%～10%,
Sodium lignin sulfonate 1%～2%, molecular weight are 30000～50000 polyacrylamides 0.1～1%, wherein,
Described metallurgic sewage factory sludge moisture content >=80%, sulfur content are less than 0.30%；The oxidation of described active lime
Calcium >=90%, sulfur content are less than 0.10%；Calcium carbonate >=50% of described lime stone, sulfur content are less than 0.10%；
Magnesium carbonate >=60% of described dolomite, sulfur content are less than 0.10%.
Specifically, in order to promote the performance of binding agent, described dolomite and the incorporation mass ratio of described lime stone
For 1:1, described sodium lignin sulfonate is 2:1 with the incorporation mass ratio of described polyacrylamide.
The application also provides for the manufacture method of a kind of above-mentioned acid pellet inorganic binder, is used for manufacturing above-mentioned
Binding agent, as it is shown in figure 1, described manufacture method comprises the following steps:
Step 110；By described sewage plant sludge, described active lime, described lime stone, described dolomite,
Described sodium lignin sulfonate, described polyacrylamide measure in proportion and weigh；
Step 120；Described sewage plant sludge after weighing, described active lime, described lime stone, institute
State dolomite, described sodium lignin sulfonate, described polyacrylamide mix with water, and forming water content is 20%
Slurry, it is thus achieved that described acid pellet inorganic binder.
By being in order to easy to use by described material component slurrying, improve production efficiency, reduce scrap build
Expense.
The component of conversion processing is conducted in-depth research by inventor, it is thus achieved that acid pellet inorganic binder
Component formula, effect and the Analysis on Mechanism of each component are as follows:
Sewage plant sludge: the main raw material(s) of this binding agent, its main purpose is to provide attachment function carrier,
Also being the guarantee of system acid-base balance, the composition of iron oxide therein is also of pelletizing quality-improving simultaneously
Important means, sewage plant sludge incorporation is closely related with binding agent overall performance.
Active lime: the main body of binding agent adhesive effect, meets water reaction, generates in conjunction with sludge carrier composition
C-S-H gel, effectively can be bonded together mineral powder granular formation some strength, realize pelletizing simultaneously
Function, its incorporation is relevant to the character of pellet itself and Production requirement, too high then cost increase and shadow
Ring pelletizing later stage quality, too low, affect the using effect of binding agent.
Lime stone: lime stone is system desulfurizing agent and mineralizer, can be effectively improved viscous in thermal process reactor
The metallurgical performance of knot agent and heat reactivity, when the volume of lime stone is less than 5%, system desulfurization the most thoroughly can be drawn
Playing secondary pollution, remineralization efficacy also can be poor, and the volume at lime stone is higher than 10%, binding agent metallurgical performance
Can be poor, system discharge Dust Capacity can increase, and system response speed also declines substantially.
Dolomite: dolomite is also system desulfurizing agent and mineralizer, can be effectively improved in thermal process reactor
The metallurgical performance of binding agent and heat reactivity, have some improvement and regulation effect to thermal property tool.White clouds
The volume of stone is less than 5%, and system desulfurization the most thoroughly can cause secondary pollution, and remineralization efficacy also can be poor, white clouds
The volume of stone is higher than 10%, and binding agent metallurgical performance can be poor, and system discharge Dust Capacity can increase, system response
Speed also declines substantially, and dolomite is applied in combination with lime stone, chooses according to 1:1 ratio.
Sodium lignin sulfonate: act primarily as peptizaiton, can reduce surface tension, promotes that various active ingredient exists
Dispersion effect in system.Lignin sulfonic acid sodium content is less than 1%, reduces surface tension inconspicuous, content
Higher than 2%, cause viscosity in system to increase, affect the uniformity that reaction mass is bonding, and cost increases.
Molecular weight is 30000～50000 polyacrylamides: principal surfactant, with sodium lignin sulfonate
With the use of, both are controlled weight ratio 1:2.
The application utilize metallurgic sewage factory mud, active lime, lime stone, dolomite, sodium lignin sulfonate,
Polyacrylamide is made into compound binding agent, can be directly used for Ferrous Metallurgy production system, and i.e. this bonding knot agent can be single
Solely using, other additive need not be coordinated to use, reaction speed is fast, and efficiency is high, and bond effect is preferable；
It addition, the content of the metallurgic sewage factory mud of the application binding agent is more than 50%, it is dirty that this not only solves enterprise
The process problem of mud, also achieves the reasonable development of secondary resource simultaneously, and the solid that improve iron and steel system gives up
Gurry efficiency, reduces disposal of pollutants, and the use of this binding agent simultaneously greatly reduces iron and steel enterprise's raw material amount,
Decrease secondary pollution, improve green-ball taste, reduce production cost, solve oxidation ball in prior art
Group uses purifying bentonite as binding agent, pollutes more serious, the technical problem of bond effect difference.
It addition, pollutant emission is almost nil during this binding agent uses, will not be raw to iron and steel enterprise's metallurgy
Produce secondary pollution, and effectively reduce enterprise pollution thing discharge capacity.
Raw material major part used in this application is from sewage plant sludge, and other various medicaments are easy to get, cost
Low, it is adaptable in iron and steel metallurgy enterprise large-scale popularization, accomplish that the secondary cycle of resource and cleaning produce.This Shen
Industrial residue taken from by the reducing agent Environmental security related to, nontoxic secondary impact, main raw material(s), with low cost,
Accomplish the treatment of wastes with processes of wastes against one another.
Also, polyacrylamide then needs with sodium lignin sulfonate to buy finished industrial product, control its molecular weight mainly
In order to control production cost while ensureing treatment effect.
The component of binding agent is conducted in-depth research by inventor, investigated three components, and solving market needs
Ask and the problem of industrial waste recycling, it is provided that a kind of using effect is good, production cost is low, equipment
Condition requires low, not cause secondary pollution acid pellet inorganic binder.
The preparation of binding agent:
Consist of the following composition, by weight: metallurgic sewage factory mud 50～65%, active lime 20～
30%, lime stone 5～10%, dolomite 5～10%, sodium lignin sulfonate 1～2%, molecular weight be 30000～
50000 polyacrylamides 0～1%, wherein, metallurgic sewage factory sludge moisture content >=80%, sulfur content are less than
0.30%；Calcium oxide >=90% of active lime, sulfur content are less than 0.10%；Calcium carbonate >=50% of lime stone,
Sulfur content is less than 0.10%；Magnesium carbonate >=60% of dolomite, sulfur content are less than 0.10%.Described bonding 1-3
Middle component and proportioning see table 1:
Table 1
Binding agent is used for certain factory and produces acid pellet, key parameter when record produces and product quality result
As shown in table 2 below:
Table 2
And the parameter of binding agent of the prior art is as shown in table 3:
Table 3
By the parameter of table 2 and table 3 it can be seen that the incorporation of the binding agent of the application can not reduce pelletizing
Effectively promote pelletizing product quality on the premise of taste, cost can be reduced simultaneously.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know base
This creativeness concept, then can make other change and amendment to these embodiments.So, appended right is wanted
Ask and be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (4)
1. an acid pellet inorganic binder, it is characterised in that described acid pellet inorganic bond
The mass percent of the component of agent is: metallurgic sewage factory mud 50%～65%, active lime 20%～25%,
Lime stone 5%～10%, dolomite 5%～10%, sodium lignin sulfonate 1%～2%, molecular weight are
30000～50000 polyacrylamides 0.1～1%, wherein, described metallurgic sewage factory sludge moisture content >=80%,
Sulfur content is less than 0.30%；Calcium oxide >=90% of described active lime, sulfur content are less than 0.10%；Described
Calcium carbonate >=50% of lime stone, sulfur content are less than 0.10%；Magnesium carbonate >=60% of described dolomite, sulfur-bearing
Amount is less than 0.10%.
2. binding agent as claimed in claim 1, it is characterised in that described dolomite and described lime stone
Incorporation mass ratio be 1:1.
3. binding agent as claimed in claim 1, it is characterised in that described sodium lignin sulfonate is with described
The incorporation mass ratio of polyacrylamide is 2:1.
4. a manufacture method for above-mentioned acid pellet inorganic binder, for manufacturing such as claim 1-3
In binding agent described in arbitrary claim, it is characterised in that described manufacture method includes:
By described sewage plant sludge, described active lime, described lime stone, described dolomite, described wooden
Element sodium sulfonate, described polyacrylamide measure in proportion and weigh；
Described sewage plant sludge after weighing, described active lime, described lime stone, described dolomite,
Described sodium lignin sulfonate, described polyacrylamide mix with water, form the slurry that water content is 20%, it is thus achieved that
Described acid pellet inorganic binder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610440485.5A CN105907955A (en) | 2016-06-17 | 2016-06-17 | Inorganic binder for oxidized pellets and manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610440485.5A CN105907955A (en) | 2016-06-17 | 2016-06-17 | Inorganic binder for oxidized pellets and manufacturing method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399678A (en) * | 2016-09-28 | 2017-02-15 | 武汉钢铁股份有限公司 | Binder for pelletizing of pellet ores and preparation method of binder |
| CN110683723A (en) * | 2019-10-30 | 2020-01-14 | 湖北大学 | Mass separating agent for rapid phase separation of multiphase bodies and preparation method thereof |
| CN110698093A (en) * | 2019-10-30 | 2020-01-17 | 湖北大学 | Inorganic binder and preparation method thereof |
| CN113122711A (en) * | 2021-04-07 | 2021-07-16 | 中南大学 | Method for preparing solid organic/inorganic composite binder by using steel oily sludge, binder and application |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399678A (en) * | 2016-09-28 | 2017-02-15 | 武汉钢铁股份有限公司 | Binder for pelletizing of pellet ores and preparation method of binder |
| CN106399678B (en) * | 2016-09-28 | 2018-02-23 | 武汉钢铁有限公司 | A kind of pellet balling-up binding agent and preparation method thereof |
| CN110683723A (en) * | 2019-10-30 | 2020-01-14 | 湖北大学 | Mass separating agent for rapid phase separation of multiphase bodies and preparation method thereof |
| CN110698093A (en) * | 2019-10-30 | 2020-01-17 | 湖北大学 | Inorganic binder and preparation method thereof |
| CN110683723B (en) * | 2019-10-30 | 2022-11-11 | 湖北大学 | Mass separating agent for rapid phase separation of multiphase bodies and preparation method thereof |
| CN113122711A (en) * | 2021-04-07 | 2021-07-16 | 中南大学 | Method for preparing solid organic/inorganic composite binder by using steel oily sludge, binder and application |
| CN113122711B (en) * | 2021-04-07 | 2022-04-01 | 中南大学 | Method for preparing solid organic/inorganic composite binder by using steel oily sludge, binder and application |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170713 Address after: 430080 Qingshan District stock company of Hubei, Wuhan Province Applicant after: Wuhan iron and Steel Company Limited Address before: 430083 Qingshan District, Hubei, Wuhan factory before the door No. 2 Applicant before: WUHAN IRON AND STEEL CORPORATION |
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Application publication date: 20160831 |