Chloride

Hello Sheikh,

There is no direct relationship between kiln feed, hot meal and clinker chloride content except to say that as long as you are not regularly venting chloride from the kiln system eg via a bypass, or by removal of frequent chloride-rich buildups, or via dust escaping from the stack... input must equal output.

Chloride volatility (and therefore hot meal chloride content) is influenced by the presence of K2O and by temperature.

Clinker chloride content is influenced by chloride input from the raw materials/fuels as well as burning zone temperature and, periodically, by the shedding of chloride-rich buildups into the kiln.

Volatile element cycles are complicated systems which are not only different in every kiln, but are often different in the same kiln at different times.

Regards,

Ted.

Dear Sir,

 thank you very much for you fruitful comment but im unable to understand that with by pass system hos it is possible to get more chloride contents in the clinker while by pass system is running very well and chloride in the  by is about 1.65-1.7 %. Our fuel is HFO having no chloride contents.

 regards,

Sheikh

Hello Sheikh,

Yes, it is not possible for there to be more chloride in clinker than in kiln feed if your bypass is working efficiently.

What I suggest you try is to perform a simple chloride balance using the tonnes and chloride content of kiln feed as the input and the tonnes and chloride content of both bypass dust and clinker as the outputs, over a period of several days.

The balance would be represented by the formula;-

(Tkf * Ckf/100) = (Tclk * Cclk/100) + (Tbpd * Cbpd /100)

Where (for a given test period);-

Tkf = tonnes of kiln feed consumed.

Ckf =average chloride content of kiln feed.

Tclk= tonnes of clinker produced.

Cclk=average chloride content of clinker produced.

Tbpd= tonnes of bypass dust produced.

Cbpd=average chloride content of bypass dust produced.

Regards,

 Ted.