Reasons for the Blackening of the Interior Color of High Alumina Bricks

The inconsistent color of high alumina bricks may be caused by many factors, such as grade content, firing temperature, firing time, raw material ratio, and other factors, the following are some possible reasons:

Different production processes: In the production process of high alumina bricks, the added raw materials, temperature, pressure, and other factors will affect its chemical composition and physical properties, thereby affecting its color. Different production processes of different manufacturers may also lead to inconsistencies in color.

Different firing temperatures: the firing temperature of high alumina bricks will also affect its color, too high or too low firing temperature may cause color changes.

Different sources of raw materials: Different sources of raw materials for high alumina bricks will also affect their color, and there may be differences in mineral content and mineral composition in different regions.

Different surface treatment methods: Different surface treatment methods of high alumina bricks may also lead to inconsistent colors, such as different surface glazes.

To sum up, the inconsistency of the color of high alumina bricks may be caused by the interaction of many factors, which needs to be analyzed in detail.

The reasons for the black heart of high alumina bricks may be the following:

Raw material problem: In the production process of high alumina bricks, the raw materials contain high carbon, iron-containing impurities, or high sulfur and other chemical elements. These impurities may decompose and produce some harmful chemical substances during the high-temperature firing process. Such as carbon single compounds, sulfur dioxide, etc., these substances may pollute the quality of high alumina bricks, resulting in the black heart phenomenon.

Poor sintering conditions: During the sintering process of high alumina bricks, poor sintering conditions, such as improper sintering temperature, sintering time, sintering atmosphere, etc., may also cause black hearts in high alumina bricks.

Irregular production process: If the production process of high-alumina bricks is not standardized, such as not strictly controlling the sintering process, not cleaning the furnace in time, improper operators, etc., it may also cause black hearts in high-alumina bricks.

Aging of equipment: The high alumina brick production equipment has been used for too long, aging, wear and other conditions occur, the work efficiency and quality control ability of the equipment will decline, and it may also lead to the black heart phenomenon of high alumina bricks.

In short, there may be various reasons for the black heart of high-alumina bricks, which need to be analyzed in detail. Manufacturers need to take measures to avoid this phenomenon and ensure the quality of high-alumina bricks is stable.