CN101348862A - Iron ore pellet adhesive - Google Patents
Iron ore pellet adhesive Download PDFInfo
- Publication number
- CN101348862A CN101348862A CNA2008100130527A CN200810013052A CN101348862A CN 101348862 A CN101348862 A CN 101348862A CN A2008100130527 A CNA2008100130527 A CN A2008100130527A CN 200810013052 A CN200810013052 A CN 200810013052A CN 101348862 A CN101348862 A CN 101348862A
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- China
- Prior art keywords
- iron ore
- pellet
- percent
- tackiness agent
- adhesive
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Abstract
The invention relates to an iron ore pellet adhesive, which is characterized in that the compositions of raw materials of the iron ore pellet adhesive are 58 percent of calcium oxide CaO, 26 percent of calcium carbonate CaCo3, 4 percent of silicon dioxide SiO2, 3 percent of aluminum sesquioxide Al2O3, 3 percent of magnesium oxide MgO, 2 percent of ferric oxide Fe2O3 and 4 percent of calcium chloride CaCl2. Mixture of the raw materials is dried by a rotary kiln until the water content is between 3 and 5 percent, coarsely screened by an electronic sieve, enters into a Ramon pulverizer for fine grinding, wherein the granularity is less than or equal to 200 meshes, and the finished product of the iron ore pellet adhesive is prepared. By utilization of the iron ore pellet adhesive to produce pellet ore, the bursting temperature is higher than 550 DEG C; the compressive strength of the pellet ore is more than 3,200; and the roasting temperature is 1,200 DEG C. The iron ore pellet adhesive has good performance, is used for producing the pellet ore, and can completely replace a sodium base bentonite adhesive which is added into the pellet ore; and the compressive strength of the pellet ore produced completely meets the production requirements and has no bonding phenomenon, thereby reducing the cost and improving the quality.
Description
Technical field
The present invention relates to a kind of iron ore pellets tackiness agent.
Background technology
Iron ore pellets is a kind of agglomeration method of granule iron concentrate, and it is that abundant ore source is exhausted day by day, the result of a large amount of development and use of lean ore resource.Pellet is a kind of fine blast furnace ironmaking raw material.At present, existing more than 20 countries in the whole world produce pellet, and year is produced more than 300,000,000 ton of pellet.China over past ten years pellet development very fast, annual output can reach 3,000 ten thousand tons,, only account for about 10% of blast furnace burden.Differ greatly with external comparing up to the ratio more than 50%.Therefore, the pellet of China has bright development prospect.China's pellet production long-term existence the iron ore concentrate coarse size, moisture is big, bentonitic with addition of amount problem such as higher as tackiness agent.Incomplete statistics according to pertinent data, in the technic index of China pellet manufacturer, wilkinite is with addition of amount average out to 3%-5%, indivedual pelletizing plants are up to 8%, and bentonitic in the external pellet formation technology only be 0.1%-1% with addition of amount, high like this wilkinite has had a strong impact on the economic benefit of China's pellet production and the quality of pellet with addition of amount.
Summary of the invention
The present invention has overcome the defective of above-mentioned existence, purpose provide a kind of with addition of the amount low, basicity is high, fine iron ore pellets tackiness agent, in order to replace wilkinite fully in pellet formation.
Iron ore pellets tackiness agent content Description of the present invention:
Iron ore pellets tackiness agent of the present invention is characterized in that: the raw material moiety of iron ore pellets tackiness agent is: calcium oxide CaO 58%, lime carbonate CaCO
326%, silicon-dioxide SiO
24%, aluminium sesquioxide Al
2O
33%, magnesium oxide MgO3%, ferric oxide Fe
2O
32%, calcium chloride CaCl
24%.
The mixture of above-mentioned raw materials is utilized the rotary kiln oven dry,,, enter thunder then and cover the pulverizer fine grinding, reach granularity≤200 orders, make finished product iron ore pelletizing binder through the scalping of electronics sieve to moisture 3%-5%.
Utilize iron ore pellets tackiness agent of the present invention to produce pellet, burst temperature is higher than 550 ℃, and pellet ultimate compression strength is greater than 3200,1200 ℃ of maturing temperatures.
Iron ore pellets binder performance of the present invention is good, be used to produce pellet, manufacturing condition and sodium bentonite are identical, can replace the sodium bentonite tackiness agent that adds in the pellet fully, the pellet ultimate compression strength of producing can satisfy the requirement of production fully, no adhesion phenomenon has realized reducing cost, improving the quality.
Embodiment
Iron ore pellets tackiness agent of the present invention is achieved in that the raw material moiety of iron ore pellets tackiness agent is: calcium oxide CaO 58%, lime carbonate CaCO
326%, silicon-dioxide SiO
24%, aluminium sesquioxide Al
2O
33%, magnesium oxide MgO 3%, ferric oxide Fe2O
32%, calcium chloride CaCl
24%.
The above-mentioned raw materials mixture is utilized the rotary kiln oven dry,,, enter thunder then and cover the pulverizer fine grinding, reach granularity≤200 orders, make finished product iron ore pelletizing binder through the scalping of electronics sieve to moisture 3%-5%.
Embodiment
Adopt iron ore pellets tackiness agent of the present invention to produce pellet, select the two big fine iron breezes of fine for use, raw material composition such as following table:
| Raw material | TFe | CaO | MgO | SiO 2 | Al 2O 3 | Fe 2O 3 | CaCl 2 | CaCO 3 |
| The smart powder of two big iron | 61.25 | 1.27 | 2.0 | 4.32 | ||||
| The iron ore pellets tackiness agent | 58 | 3 | 4 | 3 | 2 | 4 | 26 |
Under the normal production process condition, with addition of amount 3% iron ore pellets tackiness agent of the present invention, it is as follows to make the every technic index of pellet that ball, oven dry, roasting produce:
With the pellet that iron ore pellets tackiness agent of the present invention is produced, its chemical ingredients detected result is as follows:
| TFe | SiO 2 | CaO | MgO | Al 2O 3 | P | S |
| 60.23 | 4.584 | 2.615 | 1.726 | 1.588 | 0.046 | 0.0022 |
Iron ore pellets tackiness agent of the present invention has passed through testing laboratory and production test research, and the iron ore pellets tackiness agent is used for producing the various technic indexs of pellet: burst temperature is higher than 550 ℃, and pellet ultimate compression strength is greater than 3200,1200 ℃ of maturing temperatures.
Above technic index and detected result prove: iron ore pellets tackiness agent of the present invention, bond properties is good, and manufacturing condition and sodium bentonite are identical, can replace sodium bentonite fully and use, realize the target that reduces cost, improves the quality as the tackiness agent in the iron ore pellets production.
Claims (3)
1, a kind of iron ore pellets tackiness agent is characterized in that: the raw material moiety of iron ore pellets tackiness agent is: calcium oxide CaO 58%, lime carbonate CaCO
326%, silicon-dioxide SiO
24%, aluminium sesquioxide Al
2O
33%, magnesium oxide MgO3%, ferric oxide Fe
2O
32%, calcium chloride CaCl
24%.
2, preparation iron ore pellets tackiness agent as claimed in claim 1, it is characterized in that: the mixture of above-mentioned raw materials is utilized the rotary kiln oven dry, to moisture 3%-5%, through the scalping of electronics sieve, enter thunder then and cover the pulverizer fine grinding, reach granularity≤200 orders and make finished product iron ore pelletizing binder.
3, iron ore pellets tackiness agent as claimed in claim 1 is characterized in that: utilize the iron ore pellets tackiness agent to produce pellet, burst temperature is higher than 550 ℃, and pellet ultimate compression strength is greater than 3200,1200 ℃ of maturing temperatures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100130527A CN101348862A (en) | 2008-09-02 | 2008-09-02 | Iron ore pellet adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100130527A CN101348862A (en) | 2008-09-02 | 2008-09-02 | Iron ore pellet adhesive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101348862A true CN101348862A (en) | 2009-01-21 |
Family
ID=40267836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100130527A Pending CN101348862A (en) | 2008-09-02 | 2008-09-02 | Iron ore pellet adhesive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101348862A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510906A (en) * | 2009-09-29 | 2012-06-20 | 株式会社神户制钢所 | Method for producing briquettes, method for producing reduced metal, and method for separating zinc or lead |
| CN102851491A (en) * | 2012-08-06 | 2013-01-02 | 莱芜钢铁集团有限公司 | Red mud composite binder for oxidized pellets |
| CN103882223A (en) * | 2014-04-02 | 2014-06-25 | 山西太钢不锈钢股份有限公司 | Method for increasing bursting temperature of laterite nickel ore pellets |
| CN103898316A (en) * | 2014-04-14 | 2014-07-02 | 王志 | Magnesium composite bentonite for pelletizing |
-
2008
- 2008-09-02 CN CNA2008100130527A patent/CN101348862A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510906A (en) * | 2009-09-29 | 2012-06-20 | 株式会社神户制钢所 | Method for producing briquettes, method for producing reduced metal, and method for separating zinc or lead |
| CN102851491A (en) * | 2012-08-06 | 2013-01-02 | 莱芜钢铁集团有限公司 | Red mud composite binder for oxidized pellets |
| CN103882223A (en) * | 2014-04-02 | 2014-06-25 | 山西太钢不锈钢股份有限公司 | Method for increasing bursting temperature of laterite nickel ore pellets |
| CN103882223B (en) * | 2014-04-02 | 2016-03-30 | 山西太钢不锈钢股份有限公司 | A kind of method improving red soil nickel ore bursting temperature of pellet ores |
| CN103898316A (en) * | 2014-04-14 | 2014-07-02 | 王志 | Magnesium composite bentonite for pelletizing |
| CN103898316B (en) * | 2014-04-14 | 2016-03-30 | 王志 | The magnesia composite bentonite of a kind of pelletizing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090121 |