CN103952544B - Compound binding agent and its production and use - Google Patents
Compound binding agent and its production and use Download PDFInfo
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- CN103952544B CN103952544B CN201410212434.8A CN201410212434A CN103952544B CN 103952544 B CN103952544 B CN 103952544B CN 201410212434 A CN201410212434 A CN 201410212434A CN 103952544 B CN103952544 B CN 103952544B
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Abstract
The present invention relates to compound binding agent and its production and use, belong to field of metallurgy.The technical problem to be solved in the present invention is to provide a kind of compound binding agent and its preparation method and application.Compound binding agent of the present invention, is prepared from by following parts by weight of component: polyvinyl alcohol 3～10 parts, sodium silicate 0.0025～0.02 part, Borax 0.0025～0.02 part, 89.96～96.995 parts of water.Further, the preparation method that the invention also discloses compound binding agent of the present invention, and the purposes forming in type is freezed off at breeze.Compound binding agent of the present invention is not while affecting the metal content of cooled agglomerated pellet, it is possible to improve comprcssive strength and the drop strength of cooled agglomerated pellet green-ball, and pollution-free, non-hazardous, it is possible to saves the energy further, reduce and pollute.
Description
Technical field
The present invention relates to compound binding agent and its production and use, belong to field of metallurgy.
Background technology
Metallic ore breeze after pulverizing grinder selects can not be made directly Metallurgical processing, so being used for breeze ball producing the main production situation becoming current, the cooled agglomerated pellet prepared have of high grade, intensity good, even-grained feature, is the good furnace charge of the equipment such as blast furnace, rotary hearth furnace, rotary kiln, shaft furnace, car-bottom furnace.
Binding agent is the key component that cooled agglomerated pellet made by breeze, it it is the important component improving pelletizing resistance to compression, drop strength, anti-spalling, require that binding agent has good adhesive property, hydrophilic, dispersibility and bigger specific surface area, energy high degree of dispersion after chance water, and the grade of pellet is affected the smaller the better, up to now, the binding agent for industry pelletizing has bentonite, clay, waterglass, cement, slaked lime, sodium carboxymethyl cellulose, pendant benefit, molasses, humic acids, xylonic acid, starch etc. and some complex adhesives.Although of a great variety, but after considering technology, economic dispatch factor, find the general-purpose adhesive being difficult to have applicable multi mineral powder, it is generally the case that be all according to specific raw material, select the corresponding binding agent being suitable for.The index selecting to need to consider of compound binding agent has: (1) room temperature viscosity；(2) pelletizing metal content is not significantly reduced；(3) quality of its mechanical performance index of pelletizing produced；(4) objectionable impurities content is how many；(5) harmless during use.
Current domestic pelletizing production enterprise majority adopts disk pellet forming process, and the binding agent of employing is mainly bentonite, and addition is 1.5%～4.0%, but bentonitic is mainly composed of (Al2, Mg3)Si4O10(OH)2·nH2O, be a kind of binding agent higher containing Al, Mg, Si, these constituent reduction grade of pellet, and subsequent smelting is unfavorable.In order to make pelletizing grade not reduce, emtallurgy research worker have employed again the organic binder bonds such as xylonic acid, sodium carboxymethyl cellulose, pendant benefit, this kind of binding agent has good caking property, can burn when high temperature, the impact of pelletizing grade is little, but because price is high, the high temperature capability of antidetonance of pelletizing and metallurgical performance can not fully meet the technological requirements such as blast furnace, rotary hearth furnace, rotary kiln, thus fail industrially popularization and application.For solving the problems referred to above, developed again multiple organic/inorganic composite binding agent in recent years, but all because in use there are some problems such as anti-knock properties difference, intensity are low, fail industrially to promote.
Application number be 92104094.6 Chinese patent disclose a kind of high strong polyviny alcohol binder and preparation method thereof, and specifically disclose Borax and PVA generation coupling reaction, make PVA degeneration, generate high strong polyviny alcohol binder, wherein, PVA content is 12-14%, Borax is 2-3% (5% aqueous solution), and water is 84-85%, but due to its binding agent obtained mobility extreme difference at normal temperatures, for colloid, it is clear that be not suitable for breeze and freeze off and form in type.
Therefore, that finds a kind of with low cost and applicable multiple breeze freezes off the binding agent forming in type, is problem demanding prompt solution.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of compound binding agent and its preparation method and application.
Compound binding agent of the present invention, is prepared from by following parts by weight of component: polyvinyl alcohol 3～10 parts, sodium silicate 0.0025～0.02 part, Borax 0.0025～0.02 part, 89.96～96.995 parts of water.
Further, preferably, compound binding agent of the present invention, following parts by weight of component it is prepared from: polyvinyl alcohol 5～10 parts, sodium silicate 0.005～0.015 part, Borax 0.005～0.015 part, 89.97～94.99 parts of water.
Further, in order to improve the viscosity of compound binding agent, its pH value is preferably 9～11；More preferably sodium hydroxide is adopted to regulate its pH value.
Compound binding agent of the present invention adds sodium silicate, Borax and sodium hydroxide in polyvinyl alcohol, can increase the viscosity of polyvinyl alcohol on the one hand, improve its viscosity；Still further aspect can also reduce consumption of binder, reduces cost；It is also possible to improve the comprcssive strength of cooled agglomerated pellet, drop strength and anti-cracking property.
Compound binding agent of the present invention need to seal preservation.
Further, the preparation method that the invention also discloses above-mentioned compound binding agent, comprise the steps:
A, addition sodium silicate and Borax, stirring in the poly-vinyl alcohol solution of 3～10wt%, obtain mixed solution；
B, in mixed solution add sodium hydroxide, regulate pH to 9～11, to obtain final product.
Wherein, in a step, the poly-vinyl alcohol solution preparation method of 3～10wt% is preferably: joined by pva powder in the water of 75 DEG C～85 DEG C, stirs under 20～40n/min speed, dissolves；B step is stirred while being preferably added to sodium hydroxide, and mixing time is 5～10min preferably.
Further, the invention also discloses above-mentioned compound binding agent and freeze off the purposes forming in type at breeze.
Wherein, described breeze can be common breeze, such as iron ore concentrate, ilmenite concentrate, converter mud, gas ash or tailings in vanadium extraction.
Further, in order to avoid waste, taking into account the character of cooled agglomerated pellet, the consumption of compound binding agent of the present invention is as the criterion with polyvinylalcohol solids content for 0.2～0.35wt% of cooled agglomerated pellet gross weight simultaneously.
Compound binding agent of the present invention freezes off the purposes forming in type at breeze, and specifically used method comprises the steps:
A, by breeze and reducing agent mix homogeneously, obtain mixed once material；
B, addition compound binding agent and water, mixing in mixed material, obtain secondary mixture material；
C, by secondary mixture material ball, obtain cooled agglomerated pellet.
The compound binding agent of the present invention has the advantage that
(1) metal content of pelletizing is not affected；
(2) comprcssive strength and the drop strength of cooled agglomerated pellet green-ball can be improved；
(3) pollution-free, non-hazardous, utilize the binding agent of the present invention can also replace traditional agglomerates of sintered pellets production technology, use instead and freeze off knot production technology, it is possible to save the energy, reduce and pollute；
(4) binding agent utilizing the present invention produces carbonaceous pelletizing, reduces reducing agent cost, improves Business Economic Benefit.
Detailed description of the invention
Compound binding agent of the present invention, is prepared from by following parts by weight of component: polyvinyl alcohol 3～10 parts, sodium silicate 0.0025～0.02 part, Borax 0.0025～0.02 part, 89.96～96.995 parts of water.
Further, preferably, compound binding agent of the present invention, following parts by weight of component it is prepared from: polyvinyl alcohol 5～10 parts, sodium silicate 0.005～0.015 part, Borax 0.005～0.015 part, 89.97～94.99 parts of water.
Further, in order to improve the viscosity of compound binding agent, its pH value is preferably 9～11；More preferably sodium hydroxide is adopted to regulate its pH value.
Compound binding agent of the present invention adds sodium silicate, Borax and sodium hydroxide in polyvinyl alcohol, can increase the viscosity of polyvinyl alcohol on the one hand, improve its viscosity；Still further aspect can also reduce consumption of binder, reduces cost；It is also possible to improve the comprcssive strength of cooled agglomerated pellet, drop strength and anti-cracking property.
Compound binding agent of the present invention need to seal preservation.
Further, the preparation method that the invention also discloses above-mentioned compound binding agent, comprise the steps:
A, addition sodium silicate and Borax, stirring in the poly-vinyl alcohol solution of 3～10wt%, obtain mixed solution；
B, in mixed solution add sodium hydroxide, regulate pH to 9～11, to obtain final product.
Wherein, in a step, the poly-vinyl alcohol solution preparation method of 3～10wt% is preferably: joined by pva powder in the water of 75 DEG C～85 DEG C, stirs under 20～40n/min speed, dissolves；B step is stirred while being preferably added to sodium hydroxide, and mixing time is 5～10min preferably.
Further, the invention also discloses above-mentioned compound binding agent and freeze off the purposes forming in type at breeze.
Wherein, described breeze can be common breeze, such as iron ore concentrate, ilmenite concentrate, converter mud, gas ash or tailings in vanadium extraction.
Further, in order to avoid waste, taking into account the character of cooled agglomerated pellet, the consumption of compound binding agent of the present invention is as the criterion with polyvinylalcohol solids content for 0.2～0.35wt% of cooled agglomerated pellet gross weight simultaneously.
Compound binding agent of the present invention freezes off the purposes forming in type at breeze, and specifically used method comprises the steps:
A, by breeze and reducing agent mix homogeneously, obtain mixed once material；
B, addition compound binding agent and water, mixing in mixed material, obtain secondary mixture material；
C, by secondary mixture material ball, obtain cooled agglomerated pellet.
Below in conjunction with embodiment, the specific embodiment of the present invention is further described, does not therefore limit the present invention among described scope of embodiments.
Embodiment 1 adopts the inventive method to prepare carbonaceous pelletizing
1, the preparation of compound binding agent:
A, addition sodium silicate and Borax, stirring in the poly-vinyl alcohol solution of 5wt%, obtain mixed solution；
B, in mixed solution add sodium hydroxide, regulate pH to 10, to obtain final product；Wherein, the proportioning of each component is in Table 1.
Table 1
| Title | Polyvinyl alcohol | Borax | Sodium silicate | Water |
| Weight (kg) | 5 | 0.005 | 0.005 | 89.99 |
Wherein, the weight of polyvinyl alcohol is the weight of solute in poly-vinyl alcohol solution.
2, the preparation of sefstromite concentrate carbonaceous pelletizing:
Adding above-mentioned compound binding agent and suitable quantity of water by after sefstromite concentrate, coal blending, again mix, then adopting pressure is 7MPa hand hydraulic pressed powder mechanism ball, obtains green-ball, single green-ball weight 25～30g, by green-ball dry 2h at 120 DEG C, obtains dry bulb.Wherein, each component proportion in Table 2, the comprcssive strength of green-ball and drop strength in Table 3, dry bulb comprcssive strength and drop strength in Table 4.
Table 2
| Title | Sefstromite concentrate | Coal dust | Compound binding agent | Water |
| Weight (kg) | 78.33 | 15.67 | 4 | 4 |
Table 3
| Pelletizing sequence number | Green-ball 1 | Green-ball 2 | Green-ball 3 | Green-ball 4 | Green-ball 5 | On average |
| Comprcssive strength (N) | 65.8 | 60.7 | 64 | 66.7 | 64.8 | 64.4 |
| Drop strength (secondary) | 9 | 8 | 9 | 10 | 9 | 9 |
Table 4
| Pelletizing sequence number | Dry bulb 1 | Dry bulb 2 | Dry bulb 3 | Dry bulb 4 | Dry bulb 5 | On average |
| Comprcssive strength (N) | 198.4 | 224.6 | 234.5 | 219.5 | 217.6 | 218.92 |
| Drop strength (secondary) | 125 | 158 | 106 | 135 | 130 | 130.8 |
Embodiment 2 adopts the inventive method to prepare carbonaceous pelletizing
1, the preparation of compound binding agent:
A, addition sodium silicate and Borax, stirring in the poly-vinyl alcohol solution of 10wt%, obtain mixed solution；
B, in mixed solution add sodium hydroxide, regulate pH to 10, to obtain final product；Wherein, the proportioning of each component is in Table 5.
Table 5
| Component | Polyvinyl alcohol | Borax | Sodium silicate | Water |
| Weight (kg) | 10 | 0.01 | 0.01 | 89.98 |
Wherein, the weight of polyvinyl alcohol is the weight of solute in poly-vinyl alcohol solution.
2, the preparation of sefstromite concentrate carbonaceous pelletizing:
Adding above-mentioned compound binding agent and suitable quantity of water by after sefstromite concentrate, coal blending, again mix, then adopting pressure is 7MPa hand hydraulic pressed powder mechanism ball, obtains green-ball, single green-ball weight 25～30g, by green-ball dry 2h at 120 DEG C, obtains dry bulb.Wherein, each component proportion in Table 6, the comprcssive strength of green-ball and drop strength in Table 7, dry bulb comprcssive strength and drop strength in Table 8.
Table 6
| Title | Sefstromite concentrate | Coal dust | Compound binding agent | Water |
| Weight (kg) | 78.33 | 15.67 | 2 | 4 |
Table 7
| Pelletizing sequence number | Green-ball 1 | Green-ball 2 | Green-ball 3 | Green-ball 4 | Green-ball 5 | On average |
| Comprcssive strength (N) | 85 | 79.4 | 80.5 | 78.6 | 79.4 | 80.58 |
| Drop strength (secondary) | 17 | 22 | 18 | 18 | 20 | 19 |
Table 8
| Pelletizing sequence number | Dry bulb 1 | Dry bulb 2 | Dry bulb 3 | Dry bulb 4 | Dry bulb 5 | On average |
| Comprcssive strength (N) | 225.6 | 269.4 | 260.5 | 258.4 | 230.4 | 248.86 |
| Drop strength (secondary) | 143 | 159 | 208 | 189 | 198 | 179.4 |
Embodiment 3 adopts the inventive method to prepare carbonaceous pelletizing
1, the preparation of compound binding agent:
A, addition sodium silicate and Borax, stirring in the poly-vinyl alcohol solution of 8wt%, obtain mixed solution；
B, in mixed solution add sodium hydroxide, regulate pH to 10, to obtain final product；Wherein, the proportioning of each component is in Table 9.
Table 9
| Title | Polyvinyl alcohol | Borax | Sodium silicate | Water |
| Weight (kg) | 8 | 0.01 | 0.01 | 91.98 |
Wherein, the weight of polyvinyl alcohol is the weight of solute in poly-vinyl alcohol solution.
2, the preparation of sefstromite concentrate carbonaceous pelletizing:
Adding above-mentioned compound binding agent and suitable quantity of water by after sefstromite concentrate, coal blending, again mix, then adopting pressure is 7MPa, the rotating speed of transfer roller is the pair roller pressure ball mechanism ball of 6n/min, obtains green-ball, single green-ball weight 25～30g, by green-ball dry 2h at 120 DEG C, obtain dry bulb.Wherein, each component proportion in Table 10, the comprcssive strength of green-ball and drop strength in Table 11, dry bulb comprcssive strength and drop strength in Table 12.
Table 10
| Title | Sefstromite concentrate | Coal dust | Compound binding agent | Water |
| Weight (kg) | 78.33 | 15.67 | 3 | 4 |
Table 11
| Pelletizing sequence number | Green-ball 1 | Green-ball 2 | Green-ball 3 | Green-ball 4 | Green-ball 5 | On average |
| Comprcssive strength (N) | 91.4 | 87.6 | 89.5 | 87.6 | 86.3 | 88.48 |
| Drop strength (secondary) | 35 | 28 | 19 | 29 | 24 | 27 |
Table 12
| Pelletizing sequence number | Dry bulb 1 | Dry bulb 2 | Dry bulb 3 | Dry bulb 4 | Dry bulb 5 | On average |
| Comprcssive strength (N) | 190.5 | 205.9 | 236.4 | 201.6 | 216.5 | 210.18 |
| Drop strength (secondary) | 204 | 219 | 234 | 209 | 214 | 216 |
Embodiment 4 adopts the inventive method to prepare carbonaceous pelletizing
1, the preparation of compound binding agent:
A, addition sodium silicate and Borax, stirring in the poly-vinyl alcohol solution of 8wt%, obtain mixed solution；
B, in mixed solution add sodium hydroxide, regulate pH to 10, to obtain final product；Wherein, the proportioning of each component is in Table 13.
Table 13
| Title | Polyvinyl alcohol | Borax | Sodium silicate | Water |
| Weight (kg) | 8 | 0.01 | 0.01 | 91.98 |
Wherein, the weight of polyvinyl alcohol is the weight of solute in poly-vinyl alcohol solution.
2, the preparation of gas ash carbonaceous pelletizing:
Adding above-mentioned compound binding agent and suitable quantity of water by after gas ash, coal blending, again mix, then adopting pressure is 7MPa, the rotating speed of transfer roller is the pair roller pressure ball mechanism ball of 6n/min, obtains green-ball, single green-ball weight 25～30g, by green-ball dry 2h at 120 DEG C, obtain dry bulb.Wherein, each component proportion in Table 14, the comprcssive strength of green-ball and drop strength in Table 15, dry bulb comprcssive strength and drop strength in Table 16.
Table 14
| Title | Gas ash | Coal dust | Compound binding agent | Water |
| Weight (kg) | 78.33 | 15.67 | 3 | 3 |
Table 15
| Pelletizing sequence number | Green-ball 1 | Green-ball 2 | Green-ball 3 | Green-ball 4 | Green-ball 5 | On average |
| Comprcssive strength (N) | 79.5 | 75.6 | 69.5 | 72.9 | 77.8 | 75.06 |
| Drop strength (secondary) | 14 | 18 | 18 | 16 | 20 | 17.2 |
Table 16
| Pelletizing sequence number | Dry bulb 1 | Dry bulb 2 | Dry bulb 3 | Dry bulb 4 | Dry bulb 5 | On average |
| Comprcssive strength (N) | 270.6 | 245.4 | 260.1 | 235.8 | 243.3 | 250.96 |
| Drop strength (secondary) | 179 | 188 | 199 | 205 | 176 | 189.4 |
Embodiment 5 adopts the inventive method to prepare carbonaceous pelletizing
1, the preparation of compound binding agent:
A, addition sodium silicate and Borax, stirring in the poly-vinyl alcohol solution of 8wt%, obtain mixed solution；
B, in mixed solution add sodium hydroxide, regulate pH to 10, to obtain final product；Wherein, the proportioning of each component is in Table 17.
Table 17
| Title | Polyvinyl alcohol | Borax | Sodium silicate | Water |
| Weight (kg) | 8 | 0.015 | 0.015 | 91.97 |
Wherein, the weight of polyvinyl alcohol is the weight of solute in poly-vinyl alcohol solution.
2, the preparation of converter mud carbonaceous pelletizing:
Adding above-mentioned compound binding agent and suitable quantity of water by after converter mud, coal blending, again mix, then adopting pressure is 7MPa, and the rotating speed of transfer roller is the pair roller pressure ball mechanism ball of 6n/min, obtains green-ball, by green-ball dry 2h at 120 DEG C, obtains dry bulb.Wherein, each component proportion in Table 18, the comprcssive strength of green-ball and drop strength in Table 19, dry bulb comprcssive strength and drop strength in Table 20.
Table 18
| Title | Converter mud | Coal dust | Compound binding agent | Water |
| Weight (kg) | 78.33 | 15.67 | 3 | 3 |
Table 19
| Pelletizing sequence number | Green-ball 1 | Green-ball 2 | Green-ball 3 | Green-ball 4 | Green-ball 5 | On average |
| Comprcssive strength (N) | 81.4 | 85.1 | 89.2 | 82.3 | 87.5 | 85.1 |
| Drop strength (secondary) | 13 | 15 | 15 | 17 | 17 | 15 |
Table 20
| Pelletizing sequence number | Dry bulb 1 | Dry bulb 2 | Dry bulb 3 | Dry bulb 4 | Dry bulb 5 | On average |
| Comprcssive strength (N) | 195.6 | 186.5 | 189.4 | 199.5 | 204.6 | 195.12 |
| Drop strength (secondary) | 245 | 218 | 236 | 208 | 214 | 224.2 |
Embodiment 6 adopts the inventive method to prepare carbonaceous pelletizing
1, the preparation of compound binding agent:
A, addition sodium silicate and Borax, stirring in the poly-vinyl alcohol solution of 10wt%, obtain mixed solution；
B, in mixed solution add sodium hydroxide, regulate pH to 10, to obtain final product；Wherein, the proportioning of each component is in Table 21.
Table 21
| Title | Polyvinyl alcohol | Borax | Sodium silicate | Water |
| Weight (kg) | 10 | 0.01 | 0.01 | 89.98 |
Wherein, the weight of polyvinyl alcohol is the weight of solute in poly-vinyl alcohol solution.
2, the preparation of tailings in vanadium extraction carbonaceous pelletizing:
Adding above-mentioned compound binding agent and suitable quantity of water by after tailings in vanadium extraction, coal blending, again mix, then adopting pressure is 7MPa, the rotating speed of transfer roller is the pair roller pressure ball mechanism ball of 6n/min, obtains green-ball, single green-ball weight about 25～30g, by green-ball dry 2h at 120 DEG C, obtain dry bulb.Wherein, each component proportion in Table 22, the comprcssive strength of green-ball and drop strength in Table 23, dry bulb comprcssive strength and drop strength in Table 24.
Table 22
| Title | Tailings in vanadium extraction | Coal dust | Compound binding agent | Water |
| Weight (kg) | 78.33 | 15.67 | 2 | 3 |
Table 23
| Pelletizing sequence number | Green-ball 1 | Green-ball 2 | Green-ball 3 | Green-ball 4 | Green-ball 5 | On average |
| Comprcssive strength (N) | 76.4 | 75.8 | 74.6 | 73.6 | 72.5 | 74.64 |
| Drop strength (secondary) | 8 | 7 | 9 | 8 | 8 | 8 |
Table 24
| Pelletizing sequence number | Dry bulb 1 | Dry bulb 2 | Dry bulb 3 | Dry bulb 4 | Dry bulb 5 | On average |
| Comprcssive strength (N) | 240.7 | 238.6 | 221.6 | 215.6 | 263.4 | 235.98 |
| Drop strength (secondary) | 214 | 236 | 208 | 219 | 227 | 220.8 |
Claims (11)
1. compound binding agent, it is characterised in that be prepared from by following parts by weight of component:
Its preparation method, comprises the steps:
A, addition sodium silicate and Borax, stirring in the poly-vinyl alcohol solution of 3～10wt%, obtain mixed solution；
B, in mixed solution add sodium hydroxide, regulate pH to 9～11, to obtain final product.
2. compound binding agent according to claim 1, it is characterised in that be prepared from by following parts by weight of component:
3. compound binding agent according to claim 1 and 2, it is characterised in that: the pH value of described compound binding agent is 9～11.
4. compound binding agent according to claim 3, it is characterised in that: described compound binding agent adopts sodium hydroxide to regulate pH value.
5. the preparation method of the compound binding agent described in any one of Claims 1 to 4, it is characterised in that comprise the steps:
A, addition sodium silicate and Borax, stirring in the poly-vinyl alcohol solution of 3～10wt%, obtain mixed solution；
B, in mixed solution add sodium hydroxide, regulate pH to 9～11, to obtain final product.
6. the preparation method of compound binding agent according to claim 5, it is characterized in that: in a step, the poly-vinyl alcohol solution preparation method of 3～10wt% is: pva powder is joined in the water of 75 DEG C～85 DEG C, stir under 20～40n/min speed, dissolve；B step is stirred while adding sodium hydroxide, and mixing time is 5～10min.
7. the compound binding agent described in any one of Claims 1 to 4 freezes off the purposes forming in type at breeze.
8. compound binding agent according to claim 7 freezes off the purposes forming in type at breeze, it is characterised in that: described breeze is iron ore concentrate, ilmenite concentrate, converter mud, gas ash or tailings in vanadium extraction.
9. the compound binding agent according to claim 7 or 8 freezes off the purposes forming in type at breeze, it is characterised in that: the consumption of described compound binding agent is as the criterion with polyvinylalcohol solids content for 0.2～0.35wt% of cooled agglomerated pellet gross weight.
10. the compound binding agent according to claim 7 or 8 freezes off the purposes forming in type at breeze, it is characterised in that comprise the steps:
A, by breeze and reducing agent mix homogeneously, obtain mixed once material；
B, addition compound binding agent and water, mixing in mixed material, obtain secondary mixture material；
C, by secondary mixture material ball, obtain cooled agglomerated pellet.
11. compound binding agent according to claim 9 freezes off the purposes forming in type at breeze, it is characterised in that comprise the steps:
A, by breeze and reducing agent mix homogeneously, obtain mixed once material；
B, addition compound binding agent and water, mixing in mixed material, obtain secondary mixture material；
C, by secondary mixture material ball, obtain cooled agglomerated pellet.
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| CN108070715A (en) * | 2017-12-19 | 2018-05-25 | 东北大学 | A kind of NEW TYPE OF COMPOSITE binding agent for producing acid pellet and carbonaceous pelletizing |
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| CN104988308B (en) * | 2015-06-26 | 2018-04-17 | 北京新佰奥科技有限公司 | Iron ore pellets richness iron compound binding agent and preparation method and purposes |
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| CN108004395A (en) * | 2017-12-19 | 2018-05-08 | 东北大学 | A kind of compound binding agent for producing acid pellet |
| CN108486363A (en) * | 2018-05-11 | 2018-09-04 | 攀枝花学院 | Fine fraction ilmenite concentrate carbonaceous pelletizing and preparation method thereof |
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| CN1079491A (en) * | 1992-06-04 | 1993-12-15 | 韩立泉 | High strong polyviny alcohol binder and preparation method thereof |
| CN102040925A (en) * | 2010-12-06 | 2011-05-04 | 张海宽 | Adhesive for paper products and production method thereof |
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2014
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079491A (en) * | 1992-06-04 | 1993-12-15 | 韩立泉 | High strong polyviny alcohol binder and preparation method thereof |
| CN102040925A (en) * | 2010-12-06 | 2011-05-04 | 张海宽 | Adhesive for paper products and production method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108070715A (en) * | 2017-12-19 | 2018-05-25 | 东北大学 | A kind of NEW TYPE OF COMPOSITE binding agent for producing acid pellet and carbonaceous pelletizing |
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