High-performance protective agent applied to seamless steel tube smelting and capable of preventing slag adhesion of steel slag container

Abstract

A high-performance protective agent for preventing slag adhesion of a steel slag container and applied to seamless steel tube smelting relates to the technical field of protective agents, and comprises the following chemical components: magnesium (Mg), silicon (Si), calcium (Ca), carbon (C) and unavoidable impurities. The chemical components comprise 28 to 30 weight percent of magnesium (Mg), 13 to 15 weight percent of silicon (Si), 7 to 9 weight percent of calcium (Ca), 45 to 50 weight percent of carbon (C) and the balance of inevitable impurities. The high-performance protective agent for preventing slag adhesion of the steel slag container applied to seamless steel pipe smelting has the excellent characteristics of smooth slag overturning and no residue; the refractoriness can reach 1700 DEG C, the anti-sticking property and the adhesiveness are excellent, the dosage is reduced, and the economic index is excellent.

Description

Technical Field

[0001] The invention relates to the technical field of protective agents, and in particular to a high-performance protective agent used in seamless steel pipe smelting for preventing slag from sticking to a slag container. Background Art

[0002] In the steelmaking process, various slag materials will be added and multiple types of slag will be produced from the loading of molten iron to the refining of molten steel, which will cause corrosion and slag adhesion to the containers and refractory materials. After the metallurgical containers are adhered with slag, it is not only difficult to clean, but also affects the production scheduling, product quality and iron material recovery rate. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and to provide a high-performance protective agent for preventing slag sticking to slag containers for use in seamless steel pipe smelting. The protective agent is easy to clean and will not affect production scheduling, product quality and iron material yield.

[0004] Abandoned slag is clinker with coarse particle size, small specific surface area, poor adhesion and overall poor balling performance. By studying the influence of different particle size compositions on vertical furnace production and balling process experiments, it is planned to use abandoned slag to replace Chengde iron powder for experimental research and production application, and explore the balling roasting technology of abandoned slag.

[0005] In order to solve the problems existing in the background technology, the present invention adopts the following technical solution: comprising chemical components: magnesium (Mg), silicon (Si), calcium (Ca), carbon (C) and inevitable impurities; The chemical composition ratio is as follows: magnesium (Mg) 28-30wt%, silicon (Si) 13-15wt%, calcium (Ca) 7-9wt%, carbon (C) 45-50wt%, and the remaining content is inevitable impurities.

[0006] The beneficial effects of the present invention are: 1. Excellent characteristics of smooth slag turning and no residue; 2. The refractoriness can reach 1700 degrees Celsius, with excellent anti-stickiness and adhesion, reduced dosage and excellent economic indicators. DETAILED DESCRIPTION

[0007] The present invention specifically adopts the following implementation mode: including chemical components: magnesium (Mg), silicon (Si), calcium (Ca), carbon (C) and inevitable impurities; The chemical composition ratio is as follows: magnesium (Mg) 28-30wt%, silicon (Si) 13-15wt%, calcium (Ca) 7-9wt%, carbon (C) 45-50wt%, and the remaining content is inevitable impurities.

[0008] The particle size of the product of the present invention is 200 mesh ≥ 99%, the base material, binder, carbonaceous material and additives are all well soluble in water, which is conducive to operation during spraying; when the slag spray coating is in effect, it is divided into an unreacted layer, a sintered layer, a reaction layer and a molten steel slag layer from the slag basin to the steel slag, the sintered layer has higher strength and anti-adhesion, the reaction layer decomposes at high temperature to produce a large amount of gas, which isolates the slag basin and the steel slag, forming a unique "air film anti-adhesion".

[0009] In summary, this high-performance protective agent for preventing slag sticking to slag containers used in seamless steel pipe smelting has the excellent characteristics of smooth slag turning and no residue; the refractoriness can reach 1700 degrees Celsius, it has excellent anti-stickiness and adhesion, reduced dosage and excellent economic indicators.

Claims

1. A high-performance protective agent for preventing slag from sticking to slag containers used in seamless steel pipe smelting, characterized by: The chemical components include: magnesium (Mg), silicon (Si), calcium (Ca), carbon (C) and inevitable impurities; The chemical composition ratio is as follows: magnesium (Mg) 28-30wt%, silicon (Si) 13-15wt%, calcium (Ca) 7-9wt%, carbon (C) 45-50wt%, and the remaining content is inevitable impurities.