Your Position: Home > News > The use and function of high efficiency slag remover

The use and function of high efficiency slag remover

Release Time: 2023-12-25
Read: 151

The slag removal agent can efficiently adsorb the waste slag in the metal molten liquid to achieve the best slag accumulation effect, which is conducive to the purification of molten steel and hot metal and improve the quality of castings.


The effective composition of the slag removal agent product reaches more than 96%, the accumulation density is low, the water content is low, and the softening point is low. After spreading into the surface of the metal liquid, the contact part of the metal liquid is rapidly melted, forming a “skin film” with high viscosity, which can stick to the scum and achieve the effect of rapid slagging.

The slagging agent used in cast iron absorbs and binds loose scum by forming viscous extruded matter to form large or spherical scum, which can be quickly removed.


In the use of cast steel, the viscosity of molten steel itself is large, but relatively thin, and the fluidity of slag layer is stronger than that of molten iron slag. The viscous expansion formed by slag remover at high temperature can effectively increase the consistency of molten steel scum, reduce the fluidity of molten steel slag, and aggregate into large slag blocks, which is convenient for slag removal and prevents scum from entering the cavity with pouring.


The use of efficient slagging agent in blast furnace, converter, refining furnace steelmaking, cast iron, cast steel production and other ferrous metal hot processing industries can make the slag quickly gather into a slag shell that is easy to separate from the metal molten liquid, and then can be quickly removed to ensure the cleanliness of the molten liquid.


After the slagging agent is finished, before the metal liquid out of the oven, evenly sprinkle into the appropriate amount, after the metal liquid into the pouring bag, you can evenly add a layer to cover the surface of the metal liquid, prevent thermal radiation, remove low heat loss, and block the slag to prevent the slag inside the metal liquid from entering the cavity. During slagging, due to the rapid expansion of the product in contact with the metal liquid, the formation of a thermal insulation layer, so that the upper slag remover temperature is low, the reaction is insufficient, please use the appropriate slagging tool, slightly stir the slag layer, so that the product and the slag layer fully contact, to achieve the best slag accumulation effect.


Features of efficient slag remover:

1, Can gather a variety of slag and impurities in the casting solution, to ensure the clean hot metal.

2, The slag is simple, do not leave scattered floating matter, do not touch the bag, do not damage the wall, the furnace wall.

3, Heat preservation, reduce the loss of alloying elements.

4,Reduce harmful elements such as phosphorus and sulfur in liquid metal.

5, Eliminate casting slag, improve casting quality, reduce casting scrap rate.

6, Contact with hot metal reaction is stable, no splash, non-toxic and tasteless, does not produce smoke, does not affect the human body.

Usage and dosage of efficient slag remover:

In the melting furnace, when the metal melts, sprinkle A small amount of slagging agent on the surface of the liquid metal for preliminary slagging, and then sprinkle a thin layer to cover the surface of the liquid metal, to be fully reacted, before the slag.

Sprinkle a little slagging agent on the surface of the hot metal in the ladle. After slagging, sprinkle a little covering to be cast. The amount added is about 0.1-0.3% of the weight of the liquid metal.

For the teapot bag: before casting, the slag remover is sprinkled on the liquid surface to form a slag insulation layer. As the metal liquid level in the bag drops, the slag remover drops accordingly. After casting, the slag layer can be poured out to eliminate the slagging process, and the function of heat preservation and oxygen insulation to prevent secondary oxidation can also be performed on the pouring bag.

Before the metal liquid water, you can sprinkle a little slag remover at the bottom of the package. It is recommended not to put slag remover at the bottom of the ladle before casting cast iron water, so as not to affect the spheroidization inoculation effect.



Process flow

Raw material preparation

The main raw materials of slagging agent are acids, bases, surfactants and so on. Among them, acids include hydrochloric acid, nitric acid, phosphoric acid, etc.; Alkali includes sodium hydroxide, potassium hydroxide, etc.; Surfactants include sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, etc. The choice of these raw materials should be determined according to the object of use and the environment in which the slag removal agent is used.


Production technology

  1. Formula design

The formulation design of the slag remover is the first step of the production process. In the formulation design, it is necessary to consider the cleaning effect, service life, environmental protection and other factors. In general, the formulation of slag removal agent should include acid and base neutralizer, surfactant, corrosion inhibitor and other ingredients. Among them, the acid-base neutralizer is used to adjust the pH of the slag remover, the surfactant is used to improve the cleaning effect of the slag remover, and the corrosion inhibitor is used to reduce the corrosion effect of the slag remover on the metal surface.

  1. Mix raw materials

In the process of mixing raw materials, various raw materials need to be added to the mixing tank according to the proportion of the formula, and fully stirred. During the mixing process, attention should be paid to controlling the temperature and pH value to ensure the stability and uniformity of the mixture.

  1. Reaction process

After the raw materials are mixed, a reaction process is required. During the reaction process, the ingredients of the slag remover will react chemically, producing a large amount of gas and heat. Therefore, temperature and pressure need to be controlled during the reaction to avoid danger.

  1. Filter and separate

At the end of the reaction process, the mixture needs to be filtered and separated. Filtration can remove impurities and solid particles from the mixture, and separation can separate the different components of the mixture. During filtration and separation, attention needs to be paid to controlling temperature and pressure to avoid danger.

  1. Packaging and storage

The slag remover needs to be packaged and stored. Packaging should choose materials that meet the requirements of environmental protection, and storage should be carried out in a dry, cool and ventilated place to ensure the quality and service life of the slag removal agent.