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Burning Question 67

What could be the minimum velocity of gases in down-comer duct? Our idea is to reduce velocity by increasing duct dia...

Re: Burning

I don't think there is a minimum velocity in the downcomer duct. You must draw the exhaust gases out of the kiln, but...

Burning Question 68

What are the additional facilities required to use petcoke of sulphur content around 8 per cent in a cement plant. Co...

Re: Burning

Eight per cent sulphur is very high and I don't know of any cement companies using petcoke of that sulphur content. T...

Burning Question 69

We are having to stop our kiln at frequent intervals because of ring build-ups. When we raise the alumina modulus to ...

Re: Burning

Ring formation is caused by the formation of liquids in the kiln at a particular position. These penetrate the refrac...

Burning Question 70

We are manufacturing white cement. Previously we used oil fuel, now gradually we have switch over to petcoke and nowa...

Re: Burning

This problem of the clinker dusting with the conversion to petcoke firing has been reported from a number of Indian c...

Burning Question 71

I need to know how and why companies use air cooled blast furnace slag in the manufacture of cement.

Re: Burning

Air-cooled blast furnace slag can be added to the inlet of the cement kiln in the patented Cemstar process developed ...