Low-temperature slag-removal accelerant

Abstract

The invention relates to a low-temperature slag-removal accelerant. The low-temperature slag-removal accelerant is characterized by comprising the following components in parts by weight: 70-80 partsof silicon dioxide, 10-16 parts of aluminum oxide, 0.2-2 parts of potassium oxide, 1-3 parts of iron oxide, 1-3 parts of calcium oxide, 0.2-2 parts of titanium oxide, 0.1-1 part of strontium oxide, 0.2-2 parts of magnesium oxide, 2-5 parts of borax, 3-6 parts of sodium salt, 1-3 parts of copper salt and 2-5 parts of phosphate. The various components of the low-temperature slag-removal accelerant are synergistic, after the components are melted, melt viscosity is high, slag gathering efficiency and drossing efficiency are improved, in a molten iron smelting process, impurities can be separatedunder the condition that the temperature is lower than a conventional slag-removal temperature by 300 DEG C relatively, effects of energy conservation and emission reduction are achieved, the servicelife of a boiler is prolonged, and popularization and application are facilitated.

Description

technical field [0001] The invention relates to a low-temperature slag removal accelerator. Background technique [0002] The original slag remover mostly uses straw ash or asbestos ash, which has been eliminated due to the harsh production environment of the slag remover. Now basically use natural perlite as raw material to produce slag remover. SiO due to natural perlite 2 、Al 2 o 3 and K 2 O, Na 2 The content of chemical components such as O has changed, and it shows a big difference when it is used directly as a slag remover. After it expands and melts in the cast iron ladle, the formed melt has different slag-accumulating and slag-removing effects, and the melt performance is different. It is uncontrollable and the slag removal effect is unstable; in addition, when using natural perlite to make slag remover, it needs to be dried below 800°C to remove part of the crystal water, otherwise, it will cause bursting during use, causing environmental pollution and affect...

AI Technical Summary

Problems solved by technology

SiO due to natural perlite 2 、Al 2 o 3 and K 2 O, Na 2 The content of chemical components such as O has changed, and there is a big difference when it is used directly as a slag remover. After it expands and melts in the cast iron ladle, the formed melt has different slag-accumulating and slag-removing effects, and the melt performance is different. It is uncontrollable and the slag removal effect is unstable; in addition, when using natural perlite to make slag remover, it needs to be dried below 800°C to remove part of the crystal water, otherwise, it will cause bursting during use, causing environmental pollution and affecting operation worker safety