Henan Yutai High Temperature New Material Technology Co., Ltd.

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Steelmaking auxiliaries

Amorphous refractories

Firebrick

Steelmaking auxiliaries

Amorphous refractories

Firebrick

Vanadium Titanium Anhydrous Stemming

Category：

Amorphous refractories

Inquiry

Product description

This product is suitable for large, medium and small blast furnaces. It has high strength, low consumption, resistance to slag and iron erosion, can effectively stabilize the depth of the iron notch, clean the slag and iron, and can be used without reaming and yellow smoke. The flow rate of molten iron can be controlled to effectively reduce labor intensity and eliminate potential safety hazards. It has been proved by many factories that this product is a reliable high-quality stemming.

At present, most blast furnaces in China are medium and small blast furnaces, especially small blast furnaces with single tapping. With the increasingly stringent national environmental protection policy, anhydrous stemming is required to have rapid sinterability, and the tapping process does not emit yellow smoke or splash for a long time, therefore, the stemming must be "environmentally friendly" as much as possible. On the one hand, it protects the environment; on the other hand, it also greatly improves the operating environment in front of the furnace and reduces the labor intensity for workers.

Blast furnaces continue to be large-sized and long-lived, and high-temperature and high-pressure operations are used to increase the temperature of molten iron, the tapping volume and flow rate, and prolong the tapping time, and the requirements for blast furnace tap hole stemming have become increasingly stringent. The role of stemming develops from traditional single-function plugging and tapping to performance-functional and furnace-protected stemming with more complete functions and excellent performance.

The service life of modern large blast furnaces is 10-20 years, and the lining bricks on the side wall of the blast furnace and the furnace cylinder area near the inner side of the tap are repeatedly scoured and corroded by high temperature, high pressure molten iron and slag during tapping, so it is a weak link in the lining of the blast furnace and affects the overall life of the blast furnace.

The anhydrous stemming of our company has the following characteristics:

Easy for ramming clay, good sinterability and appropriate strength, which can smoothly block the iron notch and meet the short stemming pulling time;

Easy to open pores, save drill bit and oxygen, and meet fast-paced production requirements;

During the drilling process, there is no yellow smoke, and the initial stage of tapping has not violent splashing, and the splashing time is short;

It has excellent erosion resistance, and can reduce the reaming speed, ensure stable iron production and control the flow rate of molten iron;

A good mud drum is formed on the inner side of the tap, which has good combination of new and old stemming, meets the depth of the iron notch and effectively protects the furnace cylinder.

Linear change rate

Performance is introduced：

Grade	Chemical composition（%）	Volume density（g/cm3）	Linear change rate	Pressure resistance strength（MPa）
			1350℃×3h	Drying	1350℃×3h
PT-TH-1	AL2O3≥45	≥2.15	±0.5	≥15	≥18
	SiC+C≥25
PT-TH-2	AL2O3≥40	≥2.10	±0.8	≥12	≥15
	SiC+C≥30
PT-TH-3	AL2O3≥35	≥1.55	±1.0	≥10	≥12
	SiC+C≥35
PT-TH-4	AL2O3≥35	≥1.7	±1.5	≥8	≥10
	SiC+C≥35
PT-TH-C	AL2O3≥55	≥2.2	±0.2	≥18	≥21
	SiC+C≥20
PT-TH-N	AL2O3≥30	≥1.7	±1.5	≥8	≥10
	SiC+C≥40
Applicable parts: PT-TH-1 large blast furnace, PT-TH-2 medium-sized blast furnace, PT-TH-3 small blast furnace, PT-TH-4 water stemming, PT-TH-C reduction ironmaking (Corex) stemming, mud drum stemming.。

Keywords：

titanium the and ge of blast iron stemming furnace is

Magnesite Spraying Material

High-Strength Anhydrous Stemming

Magnesite Spraying Material

High-Strength Anhydrous Stemming

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