Dry vibration material for tundish
 

Features
 

1、 Non-hazardous, easy to process, efficient, lower down the labor intensity;

2、 Longer continuous casting time, as long as over 35 hours. Corrosion resistance, easy to demold (turn over the ladle), lower down the cost of per ton steel;

3、 The baking time is short, the explosion proof is good, the thermal efficiency is high so that it can reduce the consumption of energy;

4、 The clinkering rate for tundish is low, which can purify the molten steel and improve the quality of continuous casting.  

Physicochemical indexes

Process steps

1、 Put a metal membrane inside of the tundish and make sure to leave a working gap about 5-12cm between the permanent lining and the membrane;

2、 Manually flow the dry vibration material into the gap and vibrate the membrane to make it tight;

3、 Heat the membrane with heating appliance for about 1-2 hours(the temperature is 250℃-400℃);

4、 Once cooled, lift the ladle base;

5、 When bake the ladle, please first bake it with medium-low fire for 1 hour and then use big fire to bake it red and then cast steel;

Precautions:

1、 Make sure the ladle wall will not cool once bake the tundish red to avoid loose ladle wall structure and affect the use;

2、 The temperature for the molten steel can be raised appropriately for the first batch to avoid junction flow.

Using effect

The dry vibration material produced by our factory have been applied to many steel mills throughout the country. Currently, the average service life is over 35 hours and have reached the domestic advanced level. Our products have won the praise from users. Our factory will strive to provide superior products and excellent after-sales services.

Magnesium carbon hand-operated repairing mass

Product introduction

The magnesium carbon hand-operated repairing mass produced by our company use superior, high purity sintered magnesia and modified asphalt as main material and adopt additives, such as organic and inorganic compound binder, adding plasticizer, antioxidant and then prepared by special process.

Product features

Application position

The local damage part for the converter, especially for both sides of the converter.

Process method

Throw the sachet with hand into the parts of furnace lining to be maintained when its under medium-high temperature, then, it will rapidly be sintered with the original furnace lining. The sintering time is 10-15 minutes and it will not affect the production of the converter.

Easy to process and operate. The cohesiveness is good. The structure is compact and strength is high. The resistance to slag and erosion is good.

Product index

The automatically flow repairing mass for the big surface of converter

Major features

1、It is a mixed, loose-packed repairing mass, which consists of magnesite aggregate, fine powder, composite binder, sintering agent, heating agent, fluidizing agent. The automatically flow effect under high temperature is good and can be flowed evenly to the severe erosive parts or cracks and tightly adhered to the furnace wall.

2、The sintering time is short (it takes about 30-40 minutes to sinter). It can save repairing time, improve the operation rate of converter and the pollution is less.

3、It is durable. Once it is securely sintered, it will be resistant to wash and erosion.

Quantity added to
 

Please make it 600kg-2000kg/time based on the converter capacity and the erosive situation of the furnace lining.
 

Application requirements

1、Please determine the quantity firstly and add it to the scrap steel tank.
2、Please avoid splashing slag and protect the converter and clean the residual furnace slag before adding material
3、Slowly shake the converter manually or use the scrap steel tank and make sure the material is level and retain on the horizontal position.
4、After sinter hardening, slowly add molten steel or steel scrap.
 

Physicochemical indexes

Aluminum-spinel steel castable
 

Product features
 

The aluminum-spinel steel castable is a tight and high-strength castable, which is made by introducing pre-composed aluminum-magnesium spinel and ultra-fine powder in the base material on the basis of conventional aluminum and magnesium castable. It can be resistant to the erosion of slag, flushing. It will not be peeled off. The volume is stable under high temperature. It is an ideal product for the working lining of the steel ladle.

Application

HDG-5 is applicable to the entire working lining for small and medium steel ladle. HDG-6 is suitable for the working lining underneath the slag line of large steel ladle.

Physicochemical indexes

The magnesium modification agent for final slag of converter

Product description

Currently, steel mills produce more low-carbon steel and normally adopt low iron consumption operation for better quality. These factors lead to the severe after-blow of the converter and the strong oxidizability of the final slag. It also affects the protection effect caused by slag-splashing. As a result, the service life for the furnace lining will be shortened and the slag residue rate is low, in the end, it will affect the production capacity of steel mills and their overall efficiency. The modification agent has strong deoxidization effect that will increase the magnesium content of final slag for the converter so as to immediately regulate the viscidity. It can effectively enhance its protection effect, extend the service life of furnace lining, and increase the slag residue rate.
 

Applying process

1、Recommended time to add the modification agent: Add it one single time before or after steel tapping

2、Recommended quantity to add: please make it 2-5Kgs/t steel according to the oxidizability or viscosity of the final slag for the converter.

Physicochemical indexes

Gunning mix for the converter

Product description

The gunning mix for the converter is used to repair the designated parts to be maintained. It has high adhesive rate and it is good to resist the slag erosion and flush. It is easy to use and save time to maintain. It will not affect the rhythm of converter, which is a necessary maintenance material for furnace lining.
 

Applying process
 

Mix the gunning mix and water to the appropriate viscosity by using the supporting gunning equipment and then repair the parts that need to be maintained with high pressure gas. Once finished, it can start to make the steel.
 

Major physicochemical indexes
 

Refining slag

Features

1、 The melting point is low and the melting speed is fast, so, it will shorten the refining time.

2、 The mobility is good. It has strong ability for sulfur removal and other foreign matters removal.

3、 The effect for submerged arc is good so as to reduce the burning erosion for the voltaic arc to the ladle lining. As a result, it can extend the service life for the ladle and reduce the electricity consumption for refining.

4、 There is no flame while use, the raise dust is small, so, the safe property is good.

5、 It does not absorb water and it has no efflorescence, therefore, it will not metamorphic during storage and transportation.

6、 The crystalline phase is even and the chemical component is stable.

Method of application

1、 Aluminum-calcium pre-melting refining slag is applicable to aluminum killed steel and silicon-aluminum killed steel. The silicon-calcium pre-melting refining slag is suitable for silicon killed steel.

2、 The use level for refining slag is 5-8kgs/t. It will alter according to the type of steel that smelted by users, the content of carbon, oxygen and sulfur at the smelting final point for the converter or electric furnace.

3、 The refining slag is added into steel ladle after the alloy is added in the converter or electric furnace.

Major index

It is customizable according to customer’s demands.

The dephosphating slag agent for converter

Product description

Currently, there is a latent and invisible waster in the smelting process for the majority of steel mills. The final slag cannot be fully melted. The shining iron shots on the sample spoon are the evidence. It demonstrates that the slugging has not been fully realized in the entire process. It also reduces the desulfurization and dephosphorization rate during the blowing and smelting process; therefore, the steel material consumption is high and the benefits for the steel mills are affected.  

The dephosphating slag agent produced by our company is rapid and complete for slugging. The slugging is long. It can save the consumption of the loose-packed material, reduce the steel material consumption, save the oxygen consumption, enhance the desulfurization and dephosphorization rate.

Applying process
 

Our company suggest that the added quantity of dephosphating slag agent be controlled over 5kgs/t steel and add them at different time in batches.
 

Major physicochemical indexes

Heat generating agent for silicon-aluminum converter
 

Physicochemical indexes
 

The effect of heat generating agent

The heat generating agent for the converter makes use of the heat generating reaction of oxidization for silicon and aluminum to optimize the heating of molten bath. It is to raise the temperature of molten steel for the converter by using silicon as main material and aluminum as ingredient. The phosphorus content is very low, so, it will not add the phosphorus load. It also has some CaO and Al2O3, so, it will increase the silicon and raise the temperature of molten steel and it has limited influence on the alkalinity of slag. It can assist the slugging and basically can replace fluorite.

The method of application for heat generating agent

1、Add before mixing the molten iron or add together with scrape steel pipe and steel scraps together. It is recommended to add ≥5kg/t steel for better heat generating effect.

2、It is recommended to calculate the heat generating rate by raising temperature for 5-7℃for 1kg/t steel when using such agent for the converter.

3、Pay attention to the slag alkalinity and phosphoruscontent change of molten steel at the final point, if too much agent has been added, it is recommended to add appropriate quantity of lime to supplement the alkalinity.

4、The adding time and quantity can be optimized according to the production condition change of converter.

The iron and calcium pre-melting slag agent for converter

The component of the iron and calcium pre-melting slag agent

1、Normally control the molten iron and steel scraps

2、Blow 300-360 seconds in the converter, add iron and calcium pre-melting slag agent for 3-5kgs/ ton steel. It will effectively curb the dry of slag and realize the slugging in the entire process.

3、It is recommended to add other loose-packed material normally. With the optimization of slugging effect, gradually optimize the quantity of loose-packed material to be added.

4、Please track the actual effect during the experiment and make good data statistics. The adding time and quantity of this agent can be also optimized according to the production condition change of converter.

5、The product is prohibited to use at a low temperature at the final point.

Product advantage
 

1、It can realize the slugging of converter in the entire process. It has better effect than other cosolvents and it basically has the same effect as fluorite.

2、It will improve the dephosphorizing efficiency of molten steel for the converter and effectively circumvent the potential risks of slag-bonding of oxygen lance and the splashing in the process. It can also reduce the final slag metal particles and reduce the consumption of steel materials.

3、It can shorten the oxygen supply time of the converter, reduce the oxygen consumption so as to realize the fluoride-free steel-making and protect the environment.

Operation description
 

Direct benefit prediction

The iron and calcium pre-melting slag agent contains over 40% iron. If the yield is 60%, add 1kg/ton steel of such agent will be equal to reduce 0.24kg/ton steel for steel material, 1kg/ton steel for fluorite, 0.3kg/ton steel for lime.

Assuming the price for steel scraps is 2600yuan/ton, fluorite is 2800yuan/ton, lime is 600yuan/ton, then, adding 1kg/ton steel of such agent, it will reduce the cost, which is （0.24*2.6）+（1*2.8）+（0.3*0.6）-1=2.6yuan/ton steel.
 

Environment friendly particle covering agent

Product description

Due to the strict environment protection requirements, the carbonized rice husk covering agent that used by the majority of national steel mills is poor in spread ability and heat retaining property, and easy to skull at the ladle opening. It will cause pollution to the environment; therefore, it can no longer meet the market demands. The environment friendly particle covering agent developed by our factory is good at heat retaining property and rapid in spread ability and will not raise dust, so, it conforms to the current environmental protection requirements. The product can be regulated to the optimal proportion determined by the customer requirements to satisfy the demands for all users.

Applying process
 

1、Covering agent for steel ladle：Add 1-1.5kgs/ton steel to the surface of molten steel before operation.

2、Covering agent for tundish: Add 150-200kgs when the casting liquid level of the first batch for tundish reach the stipulated requirement and then add more according to the liquid level. The standard is to make sure the surface is black.

Major physicochemical indexes

Magnesia carbon ball for converter
 

Product description
 

Currently, steel mills produce more low-carbon steel and normally adopt low iron consumption operation for better quality. These factors lead to the severe after-blow of the converter and the strong oxidizability of the final slag. It also may cause long-time slag-splashing so that it will affect the protection effect of the converter. As a result, the service life for the furnace lining will be shortened and the slag residue rate is low, in the end, it will affect the production capacity of steel mills and their overall efficiency.The magnesia carbon ball produced by our factory is fast to melt and has certain effect to deoxidize. It will increase the magnesium content of final slag for the converter so as to rapidly regulate the viscidity. It can effectively reduce the protection time for the splashing slag, enhance its effect, extend the service life of furnace lining, and increase the slag residue rate.

Applying process
 

1、Recommended time to add the magnesia carbon ball: Add it one single time before or after steel tapping.

2、Recommended quantity to add: please make it 2-5Kgs/t steel according to the oxidizability or viscosity of the final slag for the converter.  

Major physicochemical indexes