Currently generally use the Ball Mill , preheater refractory drying at once, and immediately feeding programs kilns firing 
steps are as follows : 1 Make sure each valve position ( 1 ) high temperature fan inlet valves, exhaust kiln electrostatic 
precipitator fan inlet valve is fully closed ( taking into account the requirements of environmental protection can be turned 
on kiln dust collector bag big fan, big bag filter fan adjustment valve and the high temperature kiln kiln hood fan valve 
remains slightly negative pressure ) . ( 2 ) each of the cooler fan inlet valve is fully closed . ( 3 ) Each kiln coal burner duct 
manual valves fully open. 2 in external conditions ( water, electricity , fuel supply ) have , and after the completion of detailed 
preparatory work can begin drying kiln operation. 3 ~ 8m long with a steel one , wrap the ends of the oil cotton yarn, as a 
temporary ignition stick. 4 coal injection tube into the kiln raised 50mm, connect oil gun , shut the kiln door . Confirm oil gun 
oil valve is fully closed , start a temporary oil installations . 5 will be temporarily lit ignition rod hole stretching from the kiln 
firing kiln door cover , all moved into the oil , oil return valve , make sure the oil flow back to the oil off small and slowly 
adjust the hydraulic valve to 1.8 ~ 2.5Mpa (18 ~ 25kg/cm2). 6 open a kiln fan, adjust the fan speed to about 10 to 20 % of 
normal . 7 With the increase of fuel injection quantity , to observe the kiln flame shape , adjust kiln dust collector bag big fan 
valve , keeping the kiln slightly negative pressure . 8 with fuel oil return control valve size , according to the rotary kiln 
heating system provides heating rate of warming. 9 oil and coal co-firing kiln flame withdrawal time based oil combustion , 
are generally in the kiln temperature greater than 350 ℃ began PCI . Initial kiln drying kiln temperature is low, and there is 
no clinker kiln , secondary air temperature is also low , so coal combustion instability, there is danger of exploding bad 
temper operation, kiln operation should prevent burns . 10 drying process should follow the " slow warming, do not look 
back " principle, in order to prevent a sudden rise in the tail temperature should slowly increase the amount of fuel injection 
or feed coal . And pay attention to strengthening the kiln transmission equipment maintenance support system , carefully 
check all lubrication points, lubrication and bearing temperature rise in the late drying kiln ran to note that , if necessary, 
adjust the occasional round . Pro kiln shell scanner into the kiln as the surface temperature changes. 11 kiln drying process 
to constantly adjust the air volume and a large bag filter fan valve opening, note that the flame shape , keep the flame 
burning stability and prevent overheating kiln shell , the latter should be controlled within the drying , the proportion of 
outside air to maintain longer flame temperature by rotary kiln system . 12 start kiln main gear lubrication oil station , 
according to the rotary kiln system , live by the slow drive rotary kiln . Start kiln adjust pressure compressor cylinder seal , 
while sealing dry pumps start . 13 With the gradually increasing the amount of fuel , setting the trend along the tail 
temperature rise , when there is insufficient combustion air or vacuum kiln higher Manhole cooling machine can be turned 
off , start a room cooler (F1) fans, gradually increase a room (F1) fan inlet valve opening. When the valve is opened to 60% , 
remains insufficient air flow , and gradually started a room two fixed grate bed inflatable blower (Fg1), and even two-
compartment blower to increase airflow into the kiln . 14 drying kilns late can increase the negative pressure and exhaust 
kiln kiln according to temperature, kiln shell temperature , kiln flame conditions . 15 , as the case started kilns seal cooling 
fan. When the temperature rose to 16 tail 600 ℃, constant temperature during operation , make the following preparations: 
( 1 ) levels flap preheater to human activities , one hour intervals , to prevent thermal deformation stuck. ( 2 ) Check the 
preheater dry conditions . 17 Drying late instrument commissioning should re- check the system temperature , pressure 
meters , confirm a secondary instrument loop wiring is correct, accurate digital display . 18 The inspection confirmed that the 
drying time , the absence of special circumstances into the system running operation. If the local high cylinder temperature , 
the internal lining of a problem , you should fire, stop the wind , close the valves , allowing the system to cool and pay 
attention to the rotary kiln . After cooling to carefully check the kiln , if found to have a large area of brick spalling, burst, its 
thickness at 1 / 3 the thickness of the brick above , you should consider changing the peeling of the heavy brick . When you 
want to be careful not to change the brick had been lined with drying wet water again . Re-ignition at normal operating 
temperature . 19 kiln drying method described here consider only the drying kiln , preheater and calciner , drying and 
tertiary air duct grate cooler can be done at low yields during the trial production. Please indicate Henan YuFeng Heavy 
Machinery