Its equipment is formed from fan, flammable gas source, combustor, feeder, spouted bed, cyclone separator, static dust-remover, condensator, flowmeter, thermometer and control device.

As a driver of gas operated feeder, spring energy storage driver can transform energy form to store energy so as to buffer strike on working parts of feeder to improve forced state effectively.

So far, there is no a simple and easy equation to calculate time of filling gas into the blast furnace feeder.