Previously, China's metallurgical industry, lime powder mostly been abandoned or changed into other uses, resulting in a tremendous waste of resources, along with the increasingly tense energy resources, the use of lime powder metallurgy industry, more and more people's attention. Since 2002 related to the metallurgical industry through research institutes, to solve this problem, namely the use of high-pressure powder ball press machine, the powder is pressed into a ball out of the kiln blocks for smelting use at present, some steel mills abroad and China's Baoshan Iron and Steel, Anshan Iron and ready to use. Specific processes are as follows: a lime kiln after screening, the powder into the high pressure of less than 3mm powder ball press machine pressure the ball, the ball block specifications for 35mm × 25mm × 15mm (length × width × thickness), can also be customized according to the demand side, get the ball block bulk density 1.9-2.2g / cm3, strength and bulk lime fall considerably. After the pressure of the ball after screening, passing the ball into the finished product warehouse block use for smelting.