分析了影响PV C - U双壁波纹管生产中出现焦料问题的几种因素，并介绍了一些生产经验。
Analysis was made of several factors leading to occurrence of decomposition in production of PVC-U double-wall corrugated pipe and some manufacture experience was introduced.
这是因为制粒后的烧结混合料里的较大焦粉颗粒燃烧效率更高，制粒效果更好，因而原始料层透气性和烧结透气性更好。
This was due to more efficient combustion of larger coke particles in a granulated mix and also to better granulation and therefore higher green feed permeability and sintering permeability.
并提出通过使用附加焦或正常料焦批等建立与维“护漏斗形”料面的简易方法。
And the facility methods of establishing and maintaining the funnel charge level by using additional coke or normal material charge and charge coke are put forward.
回吸量太大：气泡，焦斑，料垫不稳。
Too much retract: Air bubble, burns, and unstable melt cushion.
研究了生物质配入量、肥煤配入量、成型压力、 煤料筛分组成、炭化加热速度对型焦抗压强度的影响。
The effect of additive amount of biomass and fat coal, briquetting pressure, coal sizes distribution, heating velocity of the carbonization process on the strength of formed coke were examined.
人造石墨、煅烧石油焦、天然石墨、焦炭、以及用这类材料配成的混合料。
Commonly used for cast iron carbon additive materials are: artificial graphite, calcined petro coke, nature graphite, coke, and as the mixture with these materials.
并提出以下改进措施：提高造粒的成球率，提高料温，采用无烟煤粉替代焦粉。
Some Suggestions are put forward as following: increasing granulation ratio, raising temperature of materials, and replacing powdered coke by powdered anthracite.
对于贫煤配加量不超过10%的混合煤料，捣固炼焦后可以生产出合格的冶金焦。
For coal blend in which less than 10% lean coal was added, the qualified metallurgy coke can be produced from stamp coke-making.
对于贫煤配加量不超过10%的混合煤料，捣固炼焦后可以生产出合格的冶金焦。
For coal blend in which less than 10% lean coal was added, the qualified metallurgy coke can be produced from stamp coke-making.
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