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Dynamic tester for low temperature reduction powder of iron ore
Iron ore in low temperature reduction powder of dynamic testing apparatus in full compliance with national standards GB/T24204-2009, used to lump ore and thermally bonded pellets in blast furnace low-temperature reduction relative to measurements of the reduction zone of reduction powdering index. The working principle of the instrument is: a certain particle size range of test samples in the rotating reactor temperature 500, with hydrogen, carbon monoxide, carbon dioxide and nitrogen reduction gas composition of the isothermal reduction 60min. After the reduction of the sample with 3.15mm, 6.3mm and 0.5mm square sieve for screening. The percentage of the total mass of the ore sample, which is greater than 6.3mm, less than 3.15mm and less than 0.5mm, is used to indicate the percentage of the total mass of the three low temperature powder index (LTD).
A complete set of test equipment includes the following parts:
1 |
Time temperature control system and safety device, etc.; |
2 |
Reduction reaction device and lifting system |
3 |
A furnace with a rotating reduction reaction system |
4 |
Gas supply and control of gas flow system; |
Reduction reaction tube
Can withstand higher than 500 degrees Celsius and heat resistant metal deformation of the heat resistant metal. The inner diameter of the reduction reaction tube is about 540mm, and its internal length is 150mm. Pipe longitudinal welding installation of long x width x thickness is 540 mm x 20mm x 4mm four equidistant steel angle lifting plate, to prevent sample gathered in the lifting plate and the reaction between the tubes. The reducing reaction pipe should be connected with the dust catcher, which can be taken out by the reaction tube gas flow in the process of trapping experiment. In any part of the reduction reaction tube wall thickness is less than 3mm, the width of the lifting plate is lower than that of 18mm under the condition of the reaction tube should be replaced.
Heating furnace
Gas into the reduction reaction tube temperature should reach 500 C + 5 C, but also in the 45min to make the test sample temperature to reach and maintain the temperature of the whole test process is 500 C + 5.
Rotating device
The reduction reaction tube can be rotated according to the fixed speed of 0.2r/min + 10r/min.
Gas supply system
Can supply gas and regulate the flow of gas.
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Patent: ZL201010607631.1 ; ZL201020682251.X ; ZL201020682286.3
We have got ISO certificate for our main product to guarantee equipments quality, and we have a total of 34 national patents, including 5 invention patents, 28 utility model patents, 1 design patents
1.Shangyu Hongxing machinery equipment manufacturing Co.,Ltd,with more than 20 years history, we are one of the leading professional manufacturer of coal, coke, iron ore, steel testing equipment in China. We have got ISO certificate for our main product to guarantee equipments quality.
2.Our main products includes: iron ore testing equipment, coke testing equipment, steel testing equipment, drying equipment, crushing equipment , sampling and preparing equipment etc.
3.We have our own r&d team, according to the latest standards, through our own development software, realize the automation of equipment and computer control, to improve test efficiency and reduce human error.
4.Our advantages are providing professional testing process solution, complete set equipments and after-sale service for lab testing.
5.We are the iron ore and direct reduced iron standardization technical committee member units in China. Also, the national coal standardization technology committee member units in China.
6.main market is in Africa, southeast Asia, Asia, Middle East, etc.
Q1.what is the test principle and the reactivity?
Test principle: firstly, hydrate a certain amount of lime and at the same time, with a certain concentration of hydrochloric acid neutralize calcium hydroxide which produced during the lime hydration process. From the beginning to the end, always in a state of agitation speed, the water temperature is keep 40+-1℃ and keep in the process of neutralization equivalent points. Accurate records the consumption of hydrochloric acid when at 10minutes
The reactivity: the number recorded is called lime reactivity.
Q2.What is the importance of lime reactivity?
Lime quality had a great influence on steelmaking process, and its performance is good or bad, directly related to the smelting time, smelting speed, the quality of the steel, steel scrap ratio and heat energy utilization coefficient and other indexes. In the metallurgical industry, refers to the activity of lime degrees it reactions with other substances in the slag. With lime in the slag melting rate. Thus test the characteristics of quick lime is one of the important projects of metallurgical experiments.
Q3.What the advantages of this product compare to manual measurement ?
The manual measurement widely used at present domestic lime activity, the standardization, including of human factors is more, lead to the determination results is not accurate, efficiency is low. And contact with acid fog, there will be a certain risk, this product can be a very good one to solve the above problems.
Q4.What is the practical significance of the lime reactivity ?
Steelmaking practice shows that active lime can improve 80% efficiency of dephosphorization and desulphurization, shortening time of smelting and at the same time within 3-5 min can completely reaction with acid in the liquid steel, and general lime reaction time must be at least 6-10 min. Also, furnace life can be extent by more than 40%, moreover, furnace burden of consumption also reduce 5-8 kg/t steel, with 10 million t calculate, save $15 million a year, the production efficiency is improved significantly.
We sincerely provide below services:
-Lab project processing consulting
-Do testing for coke, iron ore, steel processing in laboratory
-OEM is acceptable, Products can be customized according to customer requirements
-Help you to solve the problems during the equipment operation.
-Spare parts provided
-Dispatching engineer overseas guidance for equipments installation, testing equipments, training workers.
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