Firing Service Premelted Calcium Aluminate Refining Slag for Steel Plant

Premelted Calcium Aluminate Refining Slag For Steel Plant

The main components of Calcium Aluminate refining slag are calcium aluminate, alumina, silica, calcium fluoride, magnesium oxide, etc. These metal ions are combined into calcium oxide-calcium fluoride base, calcium oxide-alumina base, calcium oxide-alumina- The composite material formed by oxidizing silicon base is the refining slag. Refining slag is an additive necessary for deoxidation and desulfurization in the refining process of iron and steel enterprises.

(1) CaO
CaO is an indispensable component of Calcium Aluminate Refining slag making, dephosphorization, desulfurization in metallurgical production. It has a wide source (using natural limestone as raw material and remarkable smelting effect. It is blast furnace slag, converter slag, electric furnace slag, and various premelting type (1) CaO
CaO is an indispensable component of slag making, dephosphorization, desulfurization in metallurgical production. It has a wide source (using natural limestone as raw material and remarkable smelting effect. It is blast furnace slag, converter slag, electric furnace slag, and various premelting type refining The main components of the slag. In order to ensure good desulfurization effect, it is required that the pre-melted refining slag contains a higher free state CaO.
(2) Al2O3
Al2O3 mainly comes from raw materials and deoxidation products. It has two effects on the desulfurization effect: on the one hand, as the amount of Al2O3 increases, the viscosity of the slag decreases, which promotes the reaction of slag steel, which is beneficial to desulfurization; on the other hand, it increases the activity of Al2O3 and reduces the progress of desulfurization.
(3) SiO2
SiO2 is mainly derived from impurities (gangue) and deoxidation products in the raw materials, and has a certain fluxing effect. However, the increased content is detrimental to deoxygenation and desulfurization
(4) CaF2
CaF2 can significantly reduce the viscosity of pre-melted refining slag, improve the fluidity of slag, increase mass transfer, and facilitate desulfurization. However, if the amount is too large, it is not only not conducive to deoxidation, but also erodes the lining quickly. In terms of foaming performance, its impact is twofold. On the one hand, an increase in the amount of CaF2 reduces the surface tension, which is beneficial to slag foaming, but on the other hand, it reduces the viscosity of the slag, which is not conducive to foaming, and tension plays a dominant role.
(5) MgO
The MgO in premelted refining slag is mainly derived from slag and refractory materials, and its desulfurization capacity is slightly lower than that of CaO. The main components of the slag. In order to ensure good desulfurization effect, it is required that the pre-melted refining slag contains a higher free state CaO.
(2) Al2O3
Al2O3 mainly comes from raw materials and deoxidation products. It has two effects on the desulfurization effect: on the one hand, as the amount of Al2O3 increases, the viscosity of the slag decreases, which promotes the reaction of slag steel, which is beneficial to desulfurization; on the other hand, it increases the activity of Al2O3 and reduces the progress of desulfurization.
(3) SiO2
SiO2 is mainly derived from impurities (gangue) and deoxidation products in the raw materials, and has a certain fluxing effect. However, the increased content is detrimental to deoxygenation and desulfurization
(4) CaF2
CaF2 can significantly reduce the viscosity of pre-melted refining slag, improve the fluidity of slag, increase mass transfer, and facilitate desulfurization. However, if the amount is too large, it is not only not conducive to deoxidation, but also erodes the lining quickly. In terms of foaming performance, its impact is twofold. On the one hand, an increase in the amount of CaF2 reduces the surface tension, which is beneficial to slag foaming, but on the other hand, it reduces the viscosity of the slag, which is not conducive to foaming, and tension plays a dominant role.
(5) MgO
The MgO in premelted refining slag is mainly derived from slag and refractory materials, and its desulfurization capacity is slightly lower than that of CaO.

Charicteristics of Calcium Aluminate refining slag:

1. Calcium Aluminate refining slag has high-efficiency deoxidation and desulfurization functions, which can reduce the sulfide and oxides in molten steel to the minimum level. Calcium Aluminate refining slag has strong desulfurization and deoxidization capabilities, does not produce sulfidation, and stabilizes the structure of steel products, thereby improving the quality of steel products.

2. Calcium Aluminate refining slag has trinity functions: desulfurization, deoxygenation and submerged arc.

3. Calcium Aluminate refining slag has a very strong thermal insulation function, which can shorten the refining time and improve the efficiency after submerged arc.

4. Direct use, no residual impurities, reduce labor intensity and improve efficiency.

5. Reduce power consumption during refining.

6. No water absorption, easy to store and transport.

7. Reduce hydrogen increase during smelting.

8. The effect of slag washing is present, and the effect of adsorbing inclusions is obvious.

9. Calcium Aluminate refining slag does not contain fluorine, protects the ecology, does not corrode the lining of the furnace, and reduces the consumption of ladle refractory materials.

Premelted calcium aluminate refining slag has different uses and different methods of use:

1. When deoxidation is the main method, directly add the bottom of the bag before tapping; the amount of addition is determined by the carbon content of the molten steel in the end point, generally according to 4-6kg/1000kg steel; add 1/4 before tapping, then add manganese conventionally Iron, ferrosilicon, aluminum; after the tapping, the carbon structural steel is conventionally added with manganese and ferrosilicon, without adding other alloys, aluminum feeding line, the molten steel in the package only needs to be refined by blowing argon; using this product to deoxidize, carbon enhancer (silicon carbide ) The dosage can be reduced by 30-50%

2. When desulfurization is the main method, the amount of pre-adding the bottom of the package is indeed 1/3, but it must be added to the impact position of the steel flow of the bottom of the package; as the molten steel flows out, add 2/3 of the amount; the amount of 6-8kg/1000kg of steel , Depending on the original sulfur content of the molten steel and the use effect.

Packaging detials:

1.on wooden pallets with plastic cover: wooden pallet size :930*930 or 1000*1000mm,

2.Load weight of each pallet: 1.5-2.0 tons,

3.Jumbo bag/1 ton bag

4.as your requirement

Shipping:

1.Our packaging is as per customer’s request
2.Normal goods delivered by sea transport
3.Sample shipping by express
4.We will shipping and delivery goods timely, quanlity and quantity guaranteed, and also in accordance with the contract and customer's requirment completely.

Payment Item :

1. Payment: T/T, Western Union,LC; Usually 30% deposits,70% balance before delivery or negotiations to solve.
2. MOQ: Usually 1Tons
3. Quality Warranty: 1 years

Delivery time :

1.Stocks:Within 5-7 days after receive the deposit.

2.Customization:Within 15-30 days after receive the deposite.

1. Strong professional: 
Our company has thirty years producing experience in refractory products. Our manager will supervise on a various refractorys production materials, process control, quality supervision and package delivery, and ensure the products are 100% qualified. 
2.Annual supply: 
Our company has passed ISO9001 quality management system certification and SGS certification. And the annual supply of shaped and unshaped refractory product is 28, 800-35, 000 tons. 
3.Export experiences: 

Now we have gained a global sales network reaching Taiwan, Russia,  Korea, Vietnam, Pakistan, Bulgaria, French, India, Egypt,Congo, Angola, South Africa, and so on.
4. Production equipment: 
Production and testing equipments are new, complete and automated or semi- automated. Such modern facilities and equipments have provided the fine technical guarantee for the production and testing. 
5. Testing equipment: 
Our company's testing equipments as follows: 
High Temperature RUL Tester
Bulk Density Tester
The Pressure Tester

Refractoriness Tester 

Our competitive Advantage:

1.Competitive Price. Make the products competitive in your market.

2.Quick Response:We promise quick response at the very first moment when we received your request. 3.Superior Customer Service:The company provides after sales service ensuring customer’s satisfactions,we believe in Long term partnership bringing loyalty.  

4.We had been on this filed for many years and we have our own research team,the prouduction process could be concrolled strictly.

5.We have developed stable customer base overseas and kept long-term  cooperation.

Contact for more details: 

Marina Ma

Emial:sales04(at)firebricks-supplies.com

Mobile:+8618838001797

Skype:Marina1026

QQ:2262521614