CN102373331A - Manganese series composite pellet and preparation method thereof - Google Patents
Manganese series composite pellet and preparation method thereof Download PDFInfo
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- CN102373331A CN102373331A CN2011102945986A CN201110294598A CN102373331A CN 102373331 A CN102373331 A CN 102373331A CN 2011102945986 A CN2011102945986 A CN 2011102945986A CN 201110294598 A CN201110294598 A CN 201110294598A CN 102373331 A CN102373331 A CN 102373331A
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Abstract
The invention discloses a manganese series composite pellet and a preparation method thereof. The manganese series composite pellet comprises the following components by weight percent: 26.2% of manganese, 3.79% of iron, 0.13% of phosphorus, 5.74% of silicon dioxide, 25.08% of calcium oxide and 9.5% of magnesium oxide. The alkalinity of the manganese series composite pellet is 6.02 and the compressive strength is 35-45MPa. According to the embodiment of the invention, by increasing the alkalinity of the manganese series composite pellet, the dosage of lime can be reduced, the charged ore grade can be increased, the manganese content of the slag can be reduced, the recovery rate of manganese can be increased and the power consumption can be reduced.
Description
Technical field
The present invention relates to Mn series alloy raw material production field, particularly, relating to manganese is composite pellet and preparation method thereof.
Background technology
Mostly the raw material that is used for the electrosmelting high carbon ferromanganese at present is to contain manganese and is lower than 30% acid manganese ore.When basicity of slag was on the low side, electrode inserted dark, and slag is rare, good fluidity, and the slag chill mark is few, and it is many to run manganese in the slag.Thereby for the basicity that improves slag reduces the manganese content in the slag, adopt flux method usually, promptly add lime, thereby with basicity of slag R
3, i.e. (weight of weight+MgO of CaO)/SiO
2Weight, be controlled at 1.2～1.4.Yet, adding lime and can cause reducing into the stove grade, energy consumption raises.
Summary of the invention
The present invention is intended to solve at least one of technical problem that exists in the prior art.For this reason, to be to propose to have the manganese of high basicity be composite pellet and preparation method thereof to one object of the present invention.
According to an aspect of the present invention, a kind of manganese being provided is composite pellet.By weight percentage; Said manganese is that composite pellet comprises 26.2% manganese, 3.79% iron, 0.13% phosphorus, 5.74% silicon-dioxide, 25.08% quicklime and 9.5% Natural manganese dioxide; Wherein, said manganese is that the basicity of composite pellet is 6.02, and ultimate compression strength is 35～45MPa.
According to embodiments of the invention, through improving the basicity that said manganese is composite pellet, can reduce the consumption of lime, go into the stove grade thereby improve, reduce slag and contain manganese, and then improve manganese recovery ratio, reduce power consumption.
According to another aspect of the present invention, a kind of method that manganese is composite pellet for preparing also is provided.The said manganese for preparing is that the method for composite pellet may further comprise the steps: the raw mix that a) will be made up of magnetic separation fine concentrate, the rich manganese ore powder of magnetic separation, collected ash and high basicity fine ore and sticker and water mixed stone roller 3～10 minutes in mixing pan, to obtain solid powder mixture; B) said solid powder mixture is carried out pressure ball in ball press under predetermined pressure ball roller rotating speed and predetermined roll gap pressure, to obtain wet bulb group; And c) with said wet bulb group in drying kiln under preset temperature drying 1～11 hour; To obtain said manganese is composite pellet; Wherein, by weight percentage, said manganese is that composite pellet comprises 26.2% manganese, 3.79% iron, 0.13% phosphorus, 5.74% silicon-dioxide, 25.08% quicklime and 9.5% Natural manganese dioxide; And said manganese is that the basicity of composite pellet is 6.02, and ultimate compression strength is 35～45MPa.According to embodiments of the invention; Is composite pellet through high basicity fine ore being added in the mixture of being made up of magnetic separation fine concentrate, the rich manganese ore powder of magnetic separation and collected ash and mixing stone roller, pressure ball and drying to obtain manganese; Can improve the basicity of composite pellet effectively, go into the stove grade, reduce slag and contain manganese thereby improve; And then the raising manganese recovery ratio, reduce power consumption.
In addition, the manganese for preparing according to the above embodiment of the present invention is that the method for composite pellet can also have following additional technical characterictic:
According to one embodiment of present invention; Gross weight with said raw mix is a benchmark; The content of said magnetic separation fine concentrate is 10 weight %; The content of the rich manganese ore powder of said magnetic separation is 20 weight %, and the content of said collected ash is 20 weight %, and the content of said high basicity fine ore is 50 weight %.
According to one embodiment of present invention, by weight percentage, said high basicity fine ore comprises 25.22% manganese, 4.97% iron, 0.182% phosphorus, 0.5% silicon-dioxide, 39.14% quicklime and 14.68% Natural manganese dioxide.Owing to comprise higher quicklime of weight percentage and Natural manganese dioxide in the high basicity fine ore, therefore can improve the basicity of composite pellet.
According to one embodiment of present invention, by weight percentage, said magnetic separation fine concentrate comprises 25.65% manganese, 2.26% iron, 0.094% phosphorus, 11.06% silicon-dioxide, 14.67% quicklime and 3.24% Natural manganese dioxide.
According to one embodiment of present invention, by weight percentage, the rich manganese ore powder of said magnetic separation comprises 30.06% manganese, 2.58% iron, 0.062% phosphorus, 14.11% silicon-dioxide, 15.5% quicklime and 2.86% Natural manganese dioxide.
According to one embodiment of present invention, by weight percentage, said collected ash comprises 25.04% manganese, 2.79% iron, 0.094% phosphorus, 7.8% silicon-dioxide, 4.72% quicklime and 6.41% Natural manganese dioxide.
According to one embodiment of present invention, said sticker is made up of sodium hydroxide, Sodium Silicofluoride 98min and starch.Thus, can guarantee the ultimate compression strength of composite pellet.
According to one embodiment of present invention, said predetermined pressure ball roller rotating speed is 2～10 rev/mins, and said predetermined roll gap pressure is 4～12MPa.
According to one embodiment of present invention, said preset temperature is 180～220 degrees centigrade.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 is the schema that manganese is the method for composite pellet for preparing according to the embodiment of the invention.
Embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
According to an aspect of the present invention, a kind of manganese being provided is composite pellet.According to embodiments of the invention; By weight percentage; Said manganese is that composite pellet comprises 26.2% manganese, 3.79% iron, 0.13% phosphorus, 5.74% silicon-dioxide, 25.08% quicklime and 9.5% Natural manganese dioxide; Wherein, said manganese is that the basicity of composite pellet is 6.02, and ultimate compression strength is 35～45MPa.
As used herein, term " basicity " is meant (weight of weight+MgO of CaO)/SiO in the composite pellet
2Weight, use R
3Expression.According to embodiments of the invention, through improving the basicity that said manganese is composite pellet, the consumption of lime can be reduced, even lime can be do not adopted, go into the stove grade thereby improve, reduce slag and contain manganese, and then improve manganese recovery ratio, reduce power consumption.
Need to prove that in the present invention, term " high basicity fine ore " refers to and wherein contains higher quicklime of weight percentage and Natural manganese dioxide, the basicity of this high basicity fine ore is greater than 1 usually.Thus, this high basicity fine ore can improve the basicity according to composite pellet of the present invention.
According to embodiments of the invention, said manganese is that the ultimate compression strength of composite pellet adopts ergometer to detect.After ergometer detected, manganese was that the ultimate compression strength of composite pellet is 35～45MPa, shows that pellet quality is qualified.
According to another aspect of the present invention, a kind of method that manganese is composite pellet for preparing also is provided.
Understand for ease, describe the preparation method that above-mentioned manganese is composite pellet with reference to figure 1 below.
With reference to figure 1, according to embodiments of the invention, the method for preparing manganese and be composite pellet may further comprise the steps.
At first, as shown in Figure 1, the raw mix that will be made up of the rich manganese ore powder of magnetic separation fine concentrate, magnetic separation, collected ash and high basicity fine ore and sticker and water mixed stone roller 3～10 minutes in mixing pan, to obtain solid powder mixture.
According to embodiments of the invention; Gross weight with said raw mix is a benchmark, and the content of said magnetic separation fine concentrate is 10 weight %, and the content of the rich manganese ore powder of said magnetic separation is 20 weight %; The content of said collected ash is 20 weight %, and the content of said high basicity fine ore is 50 weight %.According to embodiments of the invention, prepare composite pellet through high basicity fine ore being added in the mixture of forming by magnetic separation fine concentrate, the rich manganese ore powder of magnetic separation and collected ash, can improve the basicity of composite pellet effectively, go into the stove grade thereby improve.
According to embodiments of the invention, by weight percentage, said magnetic separation fine concentrate comprises 25.65% manganese, 2.26% iron, 0.094% phosphorus, 11.06% silicon-dioxide, 14.67% quicklime and 3.24% Natural manganese dioxide.
According to embodiments of the invention, by weight percentage, the rich manganese ore powder of said magnetic separation comprises 30.06% manganese, 2.58% iron, 0.062% phosphorus, 14.11% silicon-dioxide, 15.5% quicklime and 2.86% Natural manganese dioxide.
According to embodiments of the invention, by weight percentage, said collected ash comprises 25.04% manganese, 2.79% iron, 0.094% phosphorus, 7.8% silicon-dioxide, 4.72% quicklime and 6.41% Natural manganese dioxide.
According to embodiments of the invention, by weight percentage, said high basicity fine ore comprises 25.22% manganese, 4.97% iron, 0.182% phosphorus, 0.5% silicon-dioxide, 39.14% quicklime and 14.68% Natural manganese dioxide.According to embodiments of the invention,, therefore can improve the basicity of composite pellet owing to comprise higher quicklime of weight percentage and Natural manganese dioxide in the high basicity fine ore.
According to embodiments of the invention, the type of sticker does not receive special restriction, as long as thereby can provide enough cohesive forces to guarantee the ultimate compression strength of composite pellet.According to a concrete example of the present invention, said sticker is made up of sodium hydroxide, Sodium Silicofluoride 98min and starch.According to embodiments of the invention, the consumption of sticker is 1.5～2.5% of an above-mentioned raw materials mixture weight.
According to embodiments of the invention, the type of mixing pan does not receive special restriction, grinds into solid powder mixture as long as can above-mentioned raw materials be mixed with sticker.According to a concrete example of the present invention, mixing pan is the planetary mixed stone roller mixing machine LNX-2000 that spark lathe ltd is purchased from Nanchang.In mixing pan, it is also wetting that above-mentioned raw materials mixture, caking agent and water are fully contacted, to obtain uniform solid powder mixture.
After mixing stone roller, as shown in Figure 1, said solid powder mixture is carried out pressure ball in ball press, to obtain wet bulb group under predetermined pressure ball roller rotating speed and predetermined roll gap pressure.
According to embodiments of the invention, predetermined pressure ball roller rotating speed and predetermined roll gap pressure do not receive special restriction, as long as thereby can above-mentioned solid powder mixture pressure ball be obtained wet bulb group.According to examples more of the present invention, said predetermined pressure ball roller rotating speed is 2～10 rev/mins, and said predetermined roll gap pressure is 4～12MPa.According to a concrete example of the present invention, said predetermined pressure ball roller rotating speed is 4～8 rev/mins, and said predetermined roll gap pressure is 5～9.5MPa.
According to embodiments of the invention, the type of ball press does not receive special restriction, as long as thereby can above-mentioned solid powder mixture pressure ball be obtained wet bulb group.According to a concrete example of the present invention, the ball press GYQ800 of said ball press for being purchased from Xuelang Conveying Machine Co., Ltd. Wuxi.In ball press, above-mentioned solid powder mixture is carried out pressure ball under these conditions, thereby obtain wet bulb group.Wet bulb group falls three times in the 1m eminence, does not take place to destroy to qualified.
After pressure ball, as shown in Figure 1, with said wet bulb group in drying kiln under preset temperature drying 1～11 hour, be composite pellet to obtain said manganese.
According to embodiments of the invention, said preset temperature does not receive special restriction, as long as can carry out drying to above-mentioned wet bulb group.According to examples more of the present invention, said preset temperature is 180～220 degrees centigrade.According to a concrete example of the present invention, said preset temperature is 200 degrees centigrade.
According to embodiments of the invention, the type of drying kiln does not receive special restriction, as long as thereby can carry out drying to above-mentioned wet bulb group to obtain said manganese be composite pellet.According to a concrete example of the present invention, drying kiln mainly is made up of chain-grate machine, twin-stage cycloid speed reducer and induced draft fan.In chain-grate machine, the centre of sprocket distance is 36 meters.The twin-stage cycloid speed reducer XWED116-5133-3KW of twin-stage cycloid speed reducer for being purchased from state luxuriant step-down gear group company.Induced draft fan is the induced draft fan Y5-48NO8C-7-37KW that universal machine works is purchased from Dali.In drying kiln, above-mentioned wet bulb is rolled into a ball at 180～220 degrees centigrade to descend dry 1～11 hour, be composite pellet to obtain said manganese.
According to embodiments of the invention; By weight percentage; Said manganese is that composite pellet comprises 26.2% manganese, 3.79% iron, 0.13% phosphorus, 5.74% silicon-dioxide, 25.08% quicklime and 9.5% Natural manganese dioxide; Wherein, said manganese is that the basicity of composite pellet is 6.02, and ultimate compression strength is 35～45MPa.
According to embodiments of the invention; Is composite pellet through high basicity fine ore being added in the mixture of being made up of magnetic separation fine concentrate, the rich manganese ore powder of magnetic separation and collected ash and mixing stone roller, pressure ball and drying to obtain manganese; Can improve the basicity of composite pellet effectively, go into the stove grade, reduce slag and contain manganese thereby improve; And then the raising manganese recovery ratio, reduce power consumption.
According to a further aspect of the invention, provide also that to adopt above-mentioned manganese be the method that composite pellet prepares high carbon ferromanganese.The method for preparing high carbon ferromanganese may further comprise the steps.At first; With the manganese of 110 weight parts is that the rich manganese ore powder of magnetic separation of composite pellet, 120 weight parts, the Nan Feikuang of 120 weight parts, the primary ore of 160 weight parts, the remote rich manganese ore of water of 90 weight parts and the iron ore of 77 weight parts add in the electric furnace; The coke that adds 120 weight parts is then smelted, to obtain containing the molten slurry of high carbon ferromanganese.Then, separate said high carbon ferromanganese from the said molten slurry that contains high carbon ferromanganese.
In coke, the content of fixed carbon is greater than 78 weight %, and the granularity of coke is 5～20mm.
Describe the present invention below in conjunction with embodiment.
Embodiment 1
In mixing pan, the magnetic separation fine concentrate of 10 weight parts, the rich manganese ore powder of magnetic separation of 20 weight parts, the collected ash of 20 weight parts, high basicity fine ore, 1.5 parts by weight of adhesive and the suitable quantity of water of 50 weight parts were mixed stone roller 6 minutes, to obtain solid powder mixture.Then, in ball press, solid powder mixture is carried out pressure ball under the roll gap pressure of 6 rev/mins pressure ball roller rotating speed and 5Mpa, to obtain wet bulb group.At last, in drying kiln, wet bulb group being descended dry 3 hours at 200 degrees centigrade, is composite pellet to obtain manganese.Through test, manganese is that the basicity of composite pellet is 6.02.Detect through ergometer, the ultimate compression strength of composite pellet is 36MPa, shows that pellet quality is qualified.
Embodiment 2
In mixing pan, the magnetic separation fine concentrate of 10 weight parts, the rich manganese ore powder of magnetic separation of 20 weight parts, the collected ash of 20 weight parts, high basicity fine ore, 2 parts by weight of adhesive and the suitable quantity of water of 50 weight parts were mixed stone roller 7 minutes, to obtain solid powder mixture.Then, in ball press, solid powder mixture is carried out pressure ball under the roll gap pressure of 8 rev/mins pressure ball roller rotating speed and 4Mpa, to obtain wet bulb group.At last, in drying kiln, wet bulb group being descended dry 2.5 hours at 180 degrees centigrade, is composite pellet to obtain manganese.Through test, manganese is that the basicity of composite pellet is 6.02.Detect through ergometer, the ultimate compression strength of composite pellet is 38MPa, shows that pellet quality is qualified.
Embodiment 3
In mixing pan, the magnetic separation fine concentrate of 10 weight parts, the rich manganese ore powder of magnetic separation of 20 weight parts, the collected ash of 20 weight parts, high basicity fine ore, 2.5 parts by weight of adhesive and the suitable quantity of water of 50 weight parts were mixed stone roller 8 minutes, to obtain solid powder mixture.Then, in ball press, solid powder mixture is carried out pressure ball under the roll gap pressure of 9 rev/mins pressure ball roller rotating speed and 7Mpa, to obtain wet bulb group.At last, in drying kiln, wet bulb group being descended dry 5 hours at 210 degrees centigrade, is composite pellet to obtain manganese.Through test, manganese is that the basicity of composite pellet is 6.02.Detect through ergometer, the ultimate compression strength of composite pellet is 40MPa, shows that pellet quality is qualified.
Embodiment 4
In mixing pan; The magnetic separation fine concentrate of 10 weight parts, the rich manganese ore powder of magnetic separation of 20 weight parts, the collected ash of 20 weight parts, high basicity fine ore, 2.3 parts by weight of adhesive and the suitable quantity of water of 50 weight parts were mixed stone roller 7.5 minutes, to obtain solid powder mixture.Then, in ball press, solid powder mixture is carried out pressure ball under the roll gap pressure of 7 rev/mins pressure ball roller rotating speed and 6Mpa, to obtain wet bulb group.At last, in drying kiln, wet bulb group being descended dry 4 hours at 190 degrees centigrade, is composite pellet to obtain manganese.Through test, manganese is that the basicity of composite pellet is 6.02.Detect through ergometer, the ultimate compression strength of composite pellet is 39MPa, shows that pellet quality is qualified.
Application implementation example 1
With the manganese of preparation among the embodiment 1 of 110t is that the rich manganese ore powder of magnetic separation of composite pellet, 120t, the Nan Feikuang of 120t, the primary ore of 160t, the remote rich manganese ore of water of 90t and the iron ore of 77t add in the 12500KVA ore-smelting furnace; The coke that adds 120t is then smelted, to obtain containing the molten slurry of high carbon ferromanganese.Then, the molten slurry that contains high carbon ferromanganese is separated, to obtain high carbon ferromanganese A1.Measure it and go into stove grade, manganese recovery ratio, output, power consumption, slag and contain manganese, its result is as shown in table 1.
Go into the stove grade and be meant the weight percent of manganese element in the stove ore, that is,
Go into stove grade=(go into the gross weight of manganese element in the stove ore/go into the gross weight of stove ore) * 100%
Wherein, going into the stove ore is that the rich manganese ore powder of composite pellet, magnetic separation, Nan Feikuang, primary ore, the remote rich manganese ore of water and iron ore are formed by manganese.
Manganese recovery ratio=(weight of manganese element in the high carbon ferromanganese/go into the gross weight of manganese element in the stove ore) * 100%
Comparative Examples 1
With the general manganese of 110t is that the rich manganese ore powder of magnetic separation of composite pellet, 120t, the Nan Feikuang of 120t, the primary ore of 160t, the remote rich manganese ore of water of 90t, the iron ore of 80t and the lime of 40t add in the 12500KVA ore-smelting furnace; The coke that adds 130t is then smelted, to obtain containing the molten slurry of high carbon ferromanganese.By weight percentage; General manganese is that composite pellet comprises 25.44% manganese, 2.67% iron, 0.064% phosphorus, 9.3% silicon-dioxide, 10.62% quicklime and 2.59% Natural manganese dioxide; Iron ore comprises 48.23% iron, and lime comprises 80% quicklime.Then, the molten slurry that contains high carbon ferromanganese is separated, to obtain high carbon ferromanganese B1.Measure it and go into stove grade, manganese recovery ratio, output, power consumption, slag and contain manganese, its result is as shown in table 1.
Comparative Examples 2
With the manganese of preparation among the embodiment 1 of 110t is that the rich manganese ore powder of magnetic separation of composite pellet, 120t, the Nan Feikuang of 120t, the primary ore of 100t, the remote rich manganese ore of water of 150t, the iron ore of 78t and the lime of 28t add in the 12500KVA ore-smelting furnace; The coke that adds 130t is then smelted, to obtain containing the molten slurry of high carbon ferromanganese.By weight percentage, iron ore comprises 48.23% iron, and lime comprises 80% quicklime.Then, the molten slurry that contains high carbon ferromanganese is separated, to obtain high carbon ferromanganese B2.Measure it and go into stove grade, manganese recovery ratio, output, power consumption, slag and contain manganese, its result is as shown in table 1.
Table 1
Can find out from table 1, be that the high carbon ferromanganese that composite pellet prepares is compared with adopting general manganese, and adopting the manganese according to the embodiment of the invention is the high carbon ferromanganese of composite pellet preparation; Go into the stove grade and improved 6%; Slag contains manganese and has reduced by 25%, and manganese recovery ratio has improved 1.6%, and power consumption has reduced by 4.6%.If produce 25000 tons of high carbon ferromanganeses in 1 year, power consumption can reduce 3750000kwh/t.Thus, can reduce production costs significantly.
According to embodiments of the invention; Is composite pellet through high basicity fine ore being added in the mixture of being made up of magnetic separation fine concentrate, the rich manganese ore powder of magnetic separation and collected ash and mixing stone roller, pressure ball and drying to obtain manganese; Can improve the basicity of composite pellet effectively, go into the stove grade, reduce slag and contain manganese thereby improve; And then the raising manganese recovery ratio, reduce power consumption.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described embodiments of the invention; Those having ordinary skill in the art will appreciate that: under the situation that does not break away from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited claim and equivalent thereof.
Claims (10)
1. a manganese is composite pellet, it is characterized in that, by weight percentage, said manganese is that composite pellet comprises 26.2% manganese, 3.79% iron, 0.13% phosphorus, 5.74% silicon-dioxide, 25.08% quicklime and 9.5% Natural manganese dioxide, wherein
Said manganese is that the basicity of composite pellet is 6.02, and ultimate compression strength is 35～45MPa.
2. one kind prepares the method that manganese is composite pellet, it is characterized in that, may further comprise the steps:
A) raw mix that will be made up of the rich manganese ore powder of magnetic separation fine concentrate, magnetic separation, collected ash and high basicity fine ore and sticker and water mix stone roller in mixing pan, to obtain solid powder mixture;
B) said solid powder mixture is carried out pressure ball to obtain wet bulb group in ball press under predetermined pressure ball roller rotating speed and predetermined roll gap pressure; And
C) with said wet bulb group in drying kiln under preset temperature drying, be composite pellet to obtain said manganese, wherein
By weight percentage; Said manganese is that composite pellet comprises 26.2% manganese, 3.79% iron, 0.13% phosphorus, 5.74% silicon-dioxide, 25.08% quicklime and 9.5% Natural manganese dioxide; And said manganese is that the basicity of composite pellet is 6.02, and ultimate compression strength is 35～45MPa.
3. according to claim 2ly prepare the method that manganese is composite pellet; It is characterized in that; Gross weight with said raw mix is a benchmark, and the content of said magnetic separation fine concentrate is 10 weight %, and the content of the rich manganese ore powder of said magnetic separation is 20 weight %; The content of said collected ash is 20 weight %, and the content of said high basicity fine ore is 50 weight %.
4. describedly prepare the method that manganese is composite pellet according to claim 2 or 3; It is characterized in that; By weight percentage, said high basicity fine ore comprises 25.22% manganese, 4.97% iron, 0.182% phosphorus, 0.5% silicon-dioxide, 39.14% quicklime and 14.68% Natural manganese dioxide.
5. describedly prepare the method that manganese is composite pellet according to claim 2 or 3; It is characterized in that; By weight percentage, said magnetic separation fine concentrate comprises 25.65% manganese, 2.26% iron, 0.094% phosphorus, 11.06% silicon-dioxide, 14.67% quicklime and 3.24% Natural manganese dioxide.
6. describedly prepare the method that manganese is composite pellet according to claim 2 or 3; It is characterized in that; By weight percentage, the rich manganese ore powder of said magnetic separation comprises 30.06% manganese, 2.58% iron, 0.062% phosphorus, 14.11% silicon-dioxide, 15.5% quicklime and 2.86% Natural manganese dioxide.
7. describedly prepare the method that manganese is composite pellet according to claim 2 or 3; It is characterized in that; By weight percentage, said collected ash comprises 25.04% manganese, 2.79% iron, 0.094% phosphorus, 7.8% silicon-dioxide, 4.72% quicklime and 6.41% Natural manganese dioxide.
8. according to claim 2ly prepare the method that manganese is composite pellet, it is characterized in that said sticker is made up of sodium hydroxide, Sodium Silicofluoride 98min and starch.
9. according to claim 2ly prepare the method that manganese is composite pellet, it is characterized in that said predetermined pressure ball roller rotating speed is 2～10 rev/mins, said predetermined roll gap pressure is 4～12MPa.
10. according to each describedly prepares the method that manganese is composite pellet in the claim 4～7, it is characterized in that said preset temperature is 180～220 degrees centigrade.
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| CN107338364A (en) * | 2017-06-15 | 2017-11-10 | 江苏省冶金设计院有限公司 | A kind of method for preparing ferromanganese pearl |
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| CN102978387A (en) * | 2012-11-22 | 2013-03-20 | 北京科大国泰能源环境工程技术有限公司 | Process for producing cold-bonded pellet by using fly ash in steel solid waste |
| CN104250689A (en) * | 2014-09-24 | 2014-12-31 | 长沙矿冶研究院有限责任公司 | Composite manganese smelting furnace charge preparation process capable of realizing comprehensive utilization of manganese ore |
| CN104250689B (en) * | 2014-09-24 | 2016-10-05 | 长沙矿冶研究院有限责任公司 | The compound refining manganese furnace charge preparation technology of manganese ore comprehensive utilization can be realized |
| CN107338364A (en) * | 2017-06-15 | 2017-11-10 | 江苏省冶金设计院有限公司 | A kind of method for preparing ferromanganese pearl |
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