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 how to improve the strength of solid fired brick

如何提高实心烧结砖的强度是每一个实心烧结砖厂家颇为关心的问题，从现在烧结砖的生产技术来讲，提高烧结砖的强度可以从以下的几个方面着手：

How to improve the strength of solid fired brick is a problem that every solid fired brick manufacturer is concerned about. From the production technology of sintered brick, the following aspects can be taken to improve the strength of sintered brick:

1.提高实心烧结砖砖机的成型压力

1. improving the forming pressure of solid fired brick brick machine

实心烧结砖砖机成型压力的提高，使实心烧结砖的密度提高。只有提高砖坯的密度，才能烧出高强度的烧结砖。实践证明，成型压力（2.2到2.3之间）MPa的砖坯，烧出砖抗压强度一般为（13.9到15之间）MPa，而成型压力达到3MPa的砖坯，烧出转的抗压强度很容易达到20MPa。

The increase of molding pressure of solid fired brick brick machine increases the density of solid fired brick. Only by increasing the density of bricks can we produce high strength sintered bricks. Practice has proved that the compressive strength of fired bricks with molding pressure (between 2.2 and 2.3) MPa is generally (between 13.9 and 15) MPa, and the compressive strength of fired bricks with molding pressure of 3 MPa can easily reach 20 MPa.

2.适当提高实心烧结砖的温度

2. improve the temperature of solid fired brick properly.

同样的原料、同样的砖机生产出来的实心烧结砖砖坯，焙烧温度不同，实心烧结砖的强度也不一样。试验结果表明，实心烧结砖的抗压强度，随着隧道窑焙烧温度的提高而增大。

The strength of solid sintered brick produced by the same raw material and brick machine is different with different calcination temperature. The results show that the compressive strength of solid fired brick increases with the increase of roasting temperature in tunnel kiln.

3.适当延长实心烧结砖的保温时间

3. properly prolong the holding time of solid fired brick.

同样的升温、降温速度，实心烧结砖的烧结温度都为900℃，实心烧结砖保温时间不同，则实心烧结砖的抗压强度也不一样。实心烧结砖具有适宜的保温时间，对提高实心烧结砖抗压强度和质量是有益的。

At the same heating and cooling rate, the sintering temperature of solid fired brick is 900 C, and the compressive strength of solid fired brick is different with different holding time of solid fired brick. Solid fired brick has a suitable heat preservation time, which is beneficial to improve the compressive strength and quality of solid fired brick.

4.推荐实心烧结砖采用低温长烧

4. recommend solid fired brick with low temperature and long firing.

现在实心烧结砖普遍掺有内燃，且多采用“高温短烧”以提高产量为目标。实践证明，内燃转采用“高温短烧”的烧成方法，虽然能提高产量，但对实心烧结砖的产品质量是有一定影响，产品往往有黑心、黑疤、裂纹、压花等不良现象，抗压强度也有所降低。更为重要的是增加了煤耗，浪费了能源，对保护生态环境不利。因此，应提倡采用“低温长烧”的方法。

Nowadays, solid fired bricks are generally mixed with internal combustion, and "high temperature short firing" is often used to increase production. Practice has proved that the conversion of internal combustion to "high temperature short firing" method can improve the production, but it has a certain impact on the quality of solid sintered brick products, products often have black core, black scar, cracks, embossing and other adverse phenomena, compressive strength has also been reduced. More importantly, increasing coal consumption and wasting energy will be harmful to the protection of the ecological environment. Therefore, the method of "low temperature and long burning" should be advocated.