CN102809517A - Application of barrate strength test method in detection of barrate performance of dolomite or limestone - Google Patents
Application of barrate strength test method in detection of barrate performance of dolomite or limestone Download PDFInfo
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- CN102809517A CN102809517A CN2011101406767A CN201110140676A CN102809517A CN 102809517 A CN102809517 A CN 102809517A CN 2011101406767 A CN2011101406767 A CN 2011101406767A CN 201110140676 A CN201110140676 A CN 201110140676A CN 102809517 A CN102809517 A CN 102809517A
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- barrate
- rauhkalk
- lime stone
- screening
- rotary drum
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Abstract
The present invention relates to a performance test of a metallurgical auxiliary material, and particularly to a test of a barrate performance of dolomite or limestone. According to the method of the present invention, a barrate is provided, and steps of the method comprise: 1, screening a material, wherein limestone or dolomite with a granularity of 10-35 mm is screened; 2, drying the screened limestone or dolomite from the step 1, screening again, and randomly dividing the material into four parts, wherein a weight of each part is 9.9-10.1 kg; 3, taking a part of the limestone or the dolomite, placing into a barrate to operate at a rotation speed of 23-25 rotations per minute, completely taking out the material after completing 200 rotations, sequentially adopting square hole screens with meshes of 10 mm, 6.3 mm and 0.5 mm to screen, and carrying out weighing calculation on a barrate strength index and a wear resistance index; and 4, adopting arithmetic mean of four tests as the final result. With the present invention, corresponding physical property indexes are provided for baking production, and physical property technology standards of auxiliary materials in metallurgical enterprises are supplied.
Description
Technical field
The present invention relates to the performance test of metallurgic auxiliary materials, relate in particular to the test of rauhkalk, lime stone rotary drum performance.
Background technology
Metallurgy industry has data to show, the content of rauhkalk, lime stone is very big to the influence of rotary kiln baking performance of products, and the lime stone that therefore is widely used in the industry, rauhkalk come the matallurgical products modification.But for identical prescription, different manufacturers, the different raw materials place of production, and even same producer, the effect that raw material rises of the different batches in the identical place of production has nothing in common with each other.Therefore, be necessary the performance of rauhkalk, lime stone judged with adjustment prescription and ensure the quality of products, but currently still belong to blank in this technical field in the industry.
From experience, rauhkalk, lime stone have the characteristic that volume density is less, be prone to natural minerals such as pulverizing, and this is to cause the unsettled major reason of its effect.Therefore the applicant thinks, is necessary the rotary drum performance of rauhkalk, lime stone is measured.GB 8209-87 sintering deposit and pellet-barrate strength assay method has been stipulated the rotary drum performance measurement method of iron ore, but as previously mentioned, and rauhkalk, lime stone volume density are little, frangible, and this standard can't directly be used.
Summary of the invention
The present invention is intended to address the aforementioned drawbacks, and the application of a kind of barrate strength test method in measuring rauhkalk, lime stone rotary drum performance is provided.The present invention provides corresponding physical performance index for baked for producing, replenishes smelter auxiliary material physical property technical standard.
The present invention is achieved in that the application of barrate strength test method in measuring rauhkalk, lime stone rotary drum performance.
The application of described barrate strength test method in measuring rauhkalk, lime stone rotary drum performance, it comprises the rotary drum among the GB 8209-87, and comprises:
Step 1, the material screening filters out lime stone or the rauhkalk of granularity at 10-35mm;
Step 2 will screening once more after the lime stone of step 1 screening or rauhkalk are given drying, tells four parts at random, every part of weight 9.9-10.1kg;
Step 3; Get a lime stone or rauhkalk and put into 23-25 rev/min of rotary drum operation; Accomplishing rotation 200 changes back full doses taking-up, and the square hole screen through 10mm, 6.3mm, 0.5mm sieves successively, calculates barrate strength exponential sum abrasion resistance index according to formula after the weighing:
AI=
Wherein: TI: barrate strength index % ,+6.30mm index;
AI: scuff resistance index % ,-500 μ m indexes;
m
0: sample weight, kg;
m
1: screening back+6.3mm sample mass, kg;
m
2: the following sample mass of the screening back above 6.3mm of 500 μ m, kg;
Step 4 is calculated TI and AI with three parts of remaining material repeating steps three, is net result with the arithmetic mean of four tests.
The application of described barrate strength test method in measuring rauhkalk, lime stone rotary drum performance in step 3 and the step 4, in each experiment, allows mass loss rate to be not more than 1%.
The present invention is through measuring the auxiliary material lump ore and in the rotation rotary drum, impacted and the situation of the variation that causes physical property of rub, gropes to study the correlation parameter of grain graininess variation after the resistance to impact of material when rolling test and resistance to abrasion and the wearing and tearing.The present invention selects the material of appropriate amount; And the granularity of definite material; Make the lime stone rauhkalk can measure the rotary drum performance; Thereby for baked for producing the respective physical performance index are provided for baked for producing provides corresponding physical performance index, have further replenished smelter auxiliary material physical property technical standard.
Embodiment
Main contents of the present invention include bulging quality, granularity and test method three parts:
1, goes into bulging quality:, confirm suitable tested number in conjunction with the volume of rotary drum according to the volume and the quality of going into kiln of the rotary kiln in the roasting technique
10Kg ± 0.1Kg
2, granularity screening: through the roasting technique step is anatomized and studies, filter out (
10mm～35mm) have the grade that detects characteristic, as test appearance.
3, test method: the test material after will fully screening gives drying, more fully screening; 4 duplicate samples (each 10Kg ± 0.10Kg) that purchases respectively at random; Put into Ф 914mm*457mm rotary drum; Move 24 ± 1 rev/min 200 and change the back full dose and take out, the square hole screen through 10mm, 6.3mm, 0.5mm sieves, and calculates barrate strength index and abrasion resistance index after the weighing.
Computing formula:
Annotate: TI: barrate strength index (%) ,+6.30mm index.
AI: scuff resistance index (%) ,-500 μ m indexes.
m
0: sample weight (kg).
m
1: screening back+6.3mm sample mass (kg).
m
2: the screening back following sample mass of the above 6.3mm of 500 μ m (kg).
Calculate rotary drum and abrasion resistance index result and keep two-decimal, calculate checking arithmetic mean result and keep a decimal.And the permission mass loss can not be greater than 1%.
Claims (3)
1. the application of barrate strength test method in measuring rauhkalk, lime stone rotary drum performance.
2. the application of barrate strength test method according to claim 1 in measuring rauhkalk, lime stone rotary drum performance is characterized in that it comprises the rotary drum among the GB 8209-87, and comprises:
Step 1, the material screening filters out lime stone or the rauhkalk of granularity at 10-35mm;
Step 2 will screening once more after the lime stone of step 1 screening or rauhkalk are given drying, tells four parts at random, every part of weight 9.9-10.1kg;
Step 3; Get a lime stone or rauhkalk and put into 23-25 rev/min of rotary drum operation; Accomplishing rotation 200 changes back full doses taking-up, and the square hole screen through 10mm, 6.3mm, 0.5mm sieves successively, calculates barrate strength exponential sum abrasion resistance index according to formula after the weighing:
Wherein: TI: barrate strength index % ,+6.30mm index;
AI: scuff resistance index % ,-500 μ m indexes;
m
0: sample weight, kg;
m
1: screening back+6.3mm sample mass, kg;
m
2: the following sample mass of the screening back above 6.3mm of 500 μ m, kg;
Step 4 is calculated TI and AI with three parts of remaining material repeating steps three, is net result with the arithmetic mean of four tests.
3. the application of barrate strength test method according to claim 2 in measuring rauhkalk, lime stone rotary drum performance is characterized in that, in step 3 and the step 4, in each experiment, allows mass loss rate to be not more than 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101406767A CN102809517A (en) | 2011-05-30 | 2011-05-30 | Application of barrate strength test method in detection of barrate performance of dolomite or limestone |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101406767A CN102809517A (en) | 2011-05-30 | 2011-05-30 | Application of barrate strength test method in detection of barrate performance of dolomite or limestone |
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| CN102809517A true CN102809517A (en) | 2012-12-05 |
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| CN2011101406767A Pending CN102809517A (en) | 2011-05-30 | 2011-05-30 | Application of barrate strength test method in detection of barrate performance of dolomite or limestone |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175754A (en) * | 2013-03-26 | 2013-06-26 | 鞍钢股份有限公司 | Physical detection method for quality of lime and light calcined dolomite |
| CN105067478A (en) * | 2015-08-11 | 2015-11-18 | 首钢总公司 | Method and device for detecting powder rate of dry pellets |
| CN111307645A (en) * | 2019-12-30 | 2020-06-19 | 湖北富邦新材料有限公司 | Method for rapidly measuring dust on surface of granular fertilizer |
| CN111610305A (en) * | 2020-04-28 | 2020-09-01 | 北京科技大学 | Method for quantitatively evaluating crushing resistance and wear resistance of iron alloy for steelmaking by using rotary drum |
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| CN1924551A (en) * | 2005-08-31 | 2007-03-07 | 安阳钢铁股份有限公司 | Method for detecting raw and over burning of sintered quicklime and its special equipment |
| WO2007035946A2 (en) * | 2005-09-22 | 2007-03-29 | University Of Florida Research Foundation, Inc. | Apparatus for estimating the rate of erosion and methods of using same |
| CN101240375A (en) * | 2008-03-11 | 2008-08-13 | 营口和平三华矿产有限公司 | Iron sinter efflorescence-resisting agent and producing method thereof |
| CN101613799A (en) * | 2009-08-07 | 2009-12-30 | 山西太钢不锈钢股份有限公司 | A kind of method that improves acid sinter ore output and barrate strength |
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2011
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| CN1924551A (en) * | 2005-08-31 | 2007-03-07 | 安阳钢铁股份有限公司 | Method for detecting raw and over burning of sintered quicklime and its special equipment |
| WO2007035946A2 (en) * | 2005-09-22 | 2007-03-29 | University Of Florida Research Foundation, Inc. | Apparatus for estimating the rate of erosion and methods of using same |
| WO2007035946A3 (en) * | 2005-09-22 | 2007-06-07 | Univ Florida | Apparatus for estimating the rate of erosion and methods of using same |
| CN101240375A (en) * | 2008-03-11 | 2008-08-13 | 营口和平三华矿产有限公司 | Iron sinter efflorescence-resisting agent and producing method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175754A (en) * | 2013-03-26 | 2013-06-26 | 鞍钢股份有限公司 | Physical detection method for quality of lime and light calcined dolomite |
| CN105067478A (en) * | 2015-08-11 | 2015-11-18 | 首钢总公司 | Method and device for detecting powder rate of dry pellets |
| CN105067478B (en) * | 2015-08-11 | 2018-01-23 | 首钢总公司 | A kind of method and device for detecting powder rate of dry balls |
| CN111307645A (en) * | 2019-12-30 | 2020-06-19 | 湖北富邦新材料有限公司 | Method for rapidly measuring dust on surface of granular fertilizer |
| CN111610305A (en) * | 2020-04-28 | 2020-09-01 | 北京科技大学 | Method for quantitatively evaluating crushing resistance and wear resistance of iron alloy for steelmaking by using rotary drum |
| CN111610305B (en) * | 2020-04-28 | 2021-11-09 | 北京科技大学 | Method for quantitatively evaluating crushing resistance and wear resistance of iron alloy for steelmaking by using rotary drum |
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Application publication date: 20121205 |