AD Powder Product Profile:

AD powder series products are steel-making accelerators imported by our company from Japan and Korea. The products are widely used with functions of deoxidation, slag adjustment, slag removal, inclusion removal, rapid foaming and desulfurization promotion. The product can be used as deoxidizer directly or as hot metal desulfurizer with calcium oxide in a certain proportion. The desulfurization rate can reach 75%-90%. It has been widely used in large steel plants at home and abroad. It is a mature product. It hesitates to contain a certain amount of metal aluminium and alumina with high activity. It reacts with oxygen first in molten steel to form a comparison. Strong reduction atmosphere, alumina formed by aluminium oxide and metal aluminium itself combines with calcium oxide to form calcium aluminate slag system. The slag system has a melting point of about 1300 C. It has a high sulfur capacity, which is helpful to remove sulfur from molten steel. In addition, the effect of white slag is particularly good. In addition, the biggest advantage of this product is that it can reduce the comprehensive cost of steelmaking and accelerate the tempo of steelmaking. !

 

Compared with powdered AD powder, AD powder has the advantages of easy use and good effect after compaction. It can achieve unexpected results under various environments. Steel mills can choose between 10-50% aluminum content according to actual needs to meet the needs of deoxidation and slagging of molten steel. The sphere has good hardness and smooth appearance, and can reduce smoke and dust occurrence in transportation and use. Ad powder (aluminium ash) is compacted into spherical products with 10-50mm particles. It is easy to operate and suitable for converters, electric furnaces and refining furnaces. It has the functions of deoxidation, desulfurization, foaming, impurity removal and slagging.

 

Ad powder (industrial aluminium ash) ball product characteristics:

 

1. The product has stable composition, uniform particles and good spherical hardness.

2. The deoxidized ad powder can be used in refining furnace instead of SiC or part of aluminium wire in converter tapping. The deoxidization effect can be less than 40 ppm.

3. Desulfurized ad powder contains a large amount of al2o3, which is easy to combine with Cao to form calcium aluminate slag system, which has high sulfur capacity. In addition, aluminium in AD powder reduces the activity of oxygen in molten steel, thus contributing to sulfur precipitation from steel.

4. The foamed ad powder can be foamed in one minute during refining process, and maintain proper high temperature fluidity and surface tension. Therefore, the foamed ad powder has good submerged arc property, fast heating, and greatly reduces the consumption of electrodes and electricity.

5. The effect of removing impurities to purify molten steel is obvious. Generally, the impurities in steel can be reduced by more than 50%, which creates conditions for smelting high-quality steel.

 

Improvement of Deoxidation Effect of AD Powder Ball

 

AD powder ball has 8% - 12% of metal aluminium. SiC and some aluminium wires can be replaced by AD powder ball in refining furnace, and oxygen can be removed below 40 ppm when converter tapping. AD powder ball has good effect in making white slag, shortening refining time and improving refining efficiency.

 

Effect of AD Powder Ball on Purification of Molten Steel

 

Because of the viscosity and surface tension at high refining temperature, it is easy to adsorb CaO in steel, especially Al2O3 inclusions. In the refining process, with the stirring of argon at the bottom, inclusions in steel float and are adsorbed by AD powder ball. According to the different refining time, the total amount of inclusions in steel can be reduced by more than 50% in general. The effect of purifying molten steel is very obvious, and it is suitable for the production of high quality steel.

 

AD Powder Ball Promoting Desulfurization

 

Al2O3 in AD powder ball is specially processed. This part of Al2O3 is very different from Al2O3 in bauxite. It is in critical state and has strong activity. It is easy to combine with CaO to form calcium aluminate slag system. This slag system has high sulphur capacity. The presence of metal aluminium in AD powder reduces the activity of oxygen, which is more conducive to removing sulphur from steel (iron) water. AD powder has better desulfurization effect and lower cost than other desulfurizers in hot metal pretreatment process.

 

AD Powder Ball Foaming Better

 

AD powder ball is easy to dissolve and foam in one minute during refining process. CaO, Al2O3 and MgO can maintain proper high temperature fluidity and surface tension, so the submerged arc performance is good, the heating speed is fast, and the power consumption of the electrode is greatly reduced. In addition, the effect of AD powder in making white residue is particularly good.

 

In addition, our company can also customize and produce various specifications and indicators of metallurgical burden products according to customer requirements.

Product label	Ingredients
	AI	AL2O3	SIO2	H2O
AD15	13-18	50-65	≤10	≤0.8
AD20	18-22	45-55	≤9	≤0.8
AD30	25-32	35-50	≤9	≤0.8
AD50	≥50	＞20	≤4	≤0.8
AD65	＞65	＜15	≤4	≤0.8