CN1111096C - Coal kaolinite calcining and crushing method - Google Patents
Coal kaolinite calcining and crushing method Download PDFInfo
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- CN1111096C CN1111096C CN99116119A CN99116119A CN1111096C CN 1111096 C CN1111096 C CN 1111096C CN 99116119 A CN99116119 A CN 99116119A CN 99116119 A CN99116119 A CN 99116119A CN 1111096 C CN1111096 C CN 1111096C
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Abstract
The present invention relates to a calcination processing method for coal series kaolinite. A self development superhigh speed cyclone grinding and sorting device (applying for a patent), a trash extraction device (applying for a patent) and a trash extraction process can process large coal series kaolinite blocks from mines into 800 to 2500 meshes of superfine powder. Active substances with strong adsorption force and 88 to 97 DEG of whiteness are calcined at 700 to 960 DEG C or 1050 to 1250 DEG C. With a disk type agitator mill and a hydrocyclone, the method can produce 6250 meshes of calcined powder and water washing powder. Finished products are produced via the procedures of water washing hand selection, crushing, crushing trash extraction, wet grinding, bleaching water dewatering, drying, calcination, crushing grading and packaging.
Description
The invention belongs to the superfine powder technological method for processing, is a kind of coal kaolinite calcining and crushing method with a plurality of removal of impurities operations and equipment.
Coal series hard kaolinite is the exclusive mineral products of China, it is a kind of purity height, a reserves gangue huge, that environment is polluted, dropping into very big manpower and financial resources in decades both at home and abroad researches and develops it, but up to today, still there be not the calcining superfine powder product of stay-in-grade whiteness more than 90 degree, the product of whiteness more than 90 degree that does not particularly have low temperature calcination, its key is to process coal series hard kaolinite all causes iron to product pollution with existing disintegrating apparatus and technology, after the low temperature calcination product redden, whiteness 80 the degree below.
The processing method that the purpose of this invention is to provide a kind of coal series hard kaolinite calcining powder.It not only can be produced, and whiteness is above at 90 degree, fineness is calcined powder at 800-2500 purpose high temperature (1050-1350 ℃), the most important thing is to produce whiteness and calcine powder in 90-97 degree, fineness at 800 orders and the low temperature more than 800 orders (700-960 ℃), the low temperature calcination powder has very big adsorption capacity and high activity.
The object of the present invention is achieved like this.Adopt methods such as washing picking removal of impurities, crushing process removal of impurities and chemical subtraction to remove objectionable impurities, particularly ferrotitanium impurity; With ultrahigh speed eddy flow pulverizer (patent No. is ZL98234243.8) or airflow milling and wet method crushing and classification machine raw ore is pulverized; With material being in dynamically roll and the calcining furnace of suspended state carries out low temperature (700-960 ℃) to material and high temperature (1050-1350 ℃) is calcined; Grog after the calcining carries out crushing and classification with ultrahigh speed eddy flow pulverizer (patent No. is ZL98234243.8) or airflow milling.Different according to raw material impurity (particularly ferrotitanium impurity) content and state of living in adopt five kinds of technological processes of Fig. 1-Fig. 5 to handle.
Owing to adopted above-mentioned flow process, the present invention has:
(1) to the impurity content difference of the amount of iron content, titanium impurity particularly, and adopt different flow processs, the used flow process that impurity content is low is short, the used long flow path that impurity content is high.Therefore the treatable ore quantity of this method is big.
(2) calcining whitewash degree height generally more than 90 degree, can reach 97 degree.
(3) fine size of calcining powder is generally at the 800-2500 order, if add that water mill then can arrive 6250 orders.
(4) powder calcination speed is fast, burns thoroughly, burns evenly.
(5) light burnt powder has very big adsorption capacity and high activity.
The present invention is further described below in conjunction with flow chart and embodiment:
Fig. 1 is the process chart of first embodiment of coal kaolinite calcining and crushing method.
Fig. 2 is the process chart of second embodiment of coal kaolinite calcining and crushing method.
Fig. 3 is the process chart of the 3rd embodiment of coal kaolinite calcining and crushing method.
Fig. 4 is the process chart of the 4th embodiment of coal kaolinite calcining and crushing method.
Fig. 5 is the process chart of the 5th embodiment of coal kaolinite calcining and crushing method.
Figure 1 shows that embodiment 1, the bulk lump ore that comes from the mine pack into the dolly or the cylinder log washer of bottom of which has holes clean mineral surface with water under high pressure, remove surface impurity, deliver to windrow factory and dry, and remove bulk impurity with the method for picking.Lump ore after drying is crushed to the fritter of 10-50 millimeter through jaw crusher, sends into through bucket elevator or belt conveyer automatic knot screen and process are installed material is polluted are crushed to 20-120 order or 325 orders at ten thousand/following eddy flow pulverizer.Simultaneously hardness and the proportion impurity bigger than coal series kaolin rock are removed, or with centrifugal method with coarse crushing after hardness and the proportion impurity bigger than coal series kaolin rock remove.With 0.01-0.015% sulfuric acid or hydrochloric acid, or hydrochloric acid is bleached material and is sent into ultrahigh speed eddy flow pulverizer (patent No. is ZL98234243.8) after the oven dry or airflow milling is pulverized, it is big that this ultrahigh speed eddy flow pulverizer removes output, outside the low and simple and durable of energy consumption, the wearing and tearing that the most important thing is this device are minimum, process to material pollute ten thousand/below, utilize the concentration equipment of the high-gradient intense magnetic field of installing in the ultrahigh speed eddy flow pulverizer (surface electric field intensity 5000-20000 Gauss) to remove remaining iron in the material simultaneously, titanium impurity, utilize whirligig or the passage more than two in this concentration equipment, in time get rid of the impurity of selecting, prevent to stop up.Material is processed to above just the sending into of 800 orders or 800 orders can be made material be in dynamically to roll and the calcining furnace calcining of suspended state, is in the superfine powder of dynamically rolling with in suspension and burns soon, burns thoroughly, burns evenly.Utilize the waste heat of calcining furnace that material is dried.Calcining divides light-burned and heavily burns, and light roasting temperature is 700-960 ℃, heavily burns for 1050-1350 ℃.
Figure 2 shows that embodiment 2.The difference of it and embodiment 1 is that lump ore is behind the jaw crushing crusher machine, without coarse crushing removal of impurities operation, be crushed to 800 orders or bleach again, wash, dewater more than 800 orders but material is sent into ultrahigh speed eddy flow pulverizer (patent No. is ZL98234243.8) or airflow milling, directly send into oven dry, calcining, subsequent handling is identical with embodiment 1.
Fig. 3 is embodiment 3.Its operation is basic identical with embodiment 2, just before bleaching, the powder that ultrahigh speed eddy flow pulverizer (patent No. is ZL98234243.8) or airflow milling are come out is sent into the wet type mill, be ground to 2500 orders-6250 order and bleach again, wash, dewater, dry, calcine, pulverize.
Figure 4 shows that embodiment 4.It is at iron, coal kaolinite calcining and crushing method that Ti content is low.It need not bleach, wash, dehydration, baking operation, is the dry production flow process.
Figure 5 shows that embodiment 5.It is at iron, Ti content is low and hardness ratio coal series kaolin rock hardness the is big also few calcining coal-series kaolinite processing method of impurity.It does not need coarse crushing removal of impurities and bleaching, washing, dehydration and baking operation, is a more simple dry process method.
Claims (5)
1, a kind of coal kaolinite calcining and crushing method, it comprises following technological process:
Washing picking-fragmentation-coarse crushing and removal of impurities-bleaching, washing, dehydration, drying-pulverizing removal of impurities-calcining-crushing and classification
-packing; Or
Washing picking-fragmentation-pulverizing removal of impurities-bleaching, washing, dehydration-oven dry, calcining-crushing and classification-packing; Or
Washing picking-fragmentation-pulverizing removal of impurities-wet method pulverizing-bleaching, washing, dehydration-oven dry, calcining-crushing and classification-bag
Dress; Or
Washing picking-fragmentation-coarse crushing and removal of impurities-pulverizing removal of impurities-calcining-crushing and classification-packing; Or
Washing picking-fragmentation-pulverizing removal of impurities-calcining-crushing and classification-packing.
2, coal kaolinite calcining and crushing method according to claim 1 is characterized in that utilizing eddy flow pulverizer or centrifuge in broken and coarse crushing and removal step, and hardness and the proportion impurity bigger than coal series kaolin rock are removed;
3, coal kaolinite calcining and crushing method according to claim 1, it is characterized in that in blanching step, with 0.01%-0.015% sulfuric acid or hydrochloric acid, 0.01% calgon, the bleaching agent that 0.01% sodium phosphate trimer and the sodium dithionite of 0.5-1% are formed is bleached material; Or material is bleached with sulfuric acid or the hydrochloric acid of 5-15%.
4, coal kaolinite calcining and crushing method according to claim 1 is characterized in that
In pulverizing removal step, utilize process that contamination of products is pulverized material in ten thousand/following ultrahigh speed eddy flow pulverizer or airflow milling;
Utilize concentration equipment to remove remaining ferrotitanium impurity in the material.
5, coal kaolinite calcining and crushing method according to claim 1, it is characterized in that in calcining step, the material that enters calcining furnace is that to be processed to 800 orders or 800 orders above and utilize the waste heat of calcining furnace that material is dried, its light roasting temperature is 700 ℃-960 ℃, and heavily burning temperature is 1050 ℃-1350 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99116119A CN1111096C (en) | 1999-04-05 | 1999-04-05 | Coal kaolinite calcining and crushing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99116119A CN1111096C (en) | 1999-04-05 | 1999-04-05 | Coal kaolinite calcining and crushing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1269265A CN1269265A (en) | 2000-10-11 |
| CN1111096C true CN1111096C (en) | 2003-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99116119A Expired - Fee Related CN1111096C (en) | 1999-04-05 | 1999-04-05 | Coal kaolinite calcining and crushing method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103743A (en) * | 1985-05-16 | 1986-12-24 | 三菱重工业株式会社 | The Ginding process of solid material |
| CN1178770A (en) * | 1996-10-08 | 1998-04-15 | 高菊香 | Producing technology and equipment of calcium superphosphate wiht three kinds of powdered material |
| CN1191776A (en) * | 1997-02-18 | 1998-09-02 | 川崎重工业株式会社 | Cement clinker grinding method using vertical roller mill and apparatus thereof |
-
1999
- 1999-04-05 CN CN99116119A patent/CN1111096C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103743A (en) * | 1985-05-16 | 1986-12-24 | 三菱重工业株式会社 | The Ginding process of solid material |
| CN1178770A (en) * | 1996-10-08 | 1998-04-15 | 高菊香 | Producing technology and equipment of calcium superphosphate wiht three kinds of powdered material |
| CN1191776A (en) * | 1997-02-18 | 1998-09-02 | 川崎重工业株式会社 | Cement clinker grinding method using vertical roller mill and apparatus thereof |
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| Publication number | Publication date |
|---|---|
| CN1269265A (en) | 2000-10-11 |
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