The calculation method of high frequency furnace burden

The calculation?method of high frequency?furnace?burden

High frequency furnace?burden?is calculated as follows:

(1)?the changes of high frequency?furnace?burden?calculation?of each element?in the

A)?the carbon content?of molten iron?charge:?C%?= 1.8%?+ 0.5 Ccharge%

Molten iron to?the average?carbon content of 3.4%,?according to the type?of C?charge?is%=3.2%;

B)?silicon content of?hot metal?charging:?the needs of theaverage content of silicon?of 1.75%,?if the?silicon?melting lossis 15%,?then the

Si?=1.75/?(1-0.15)?=2.06%?charge;

C)?charge?of manganese content?hot metal?melting loss?of known Mn?=0.65%,?20%,?so the Mn?charge?=0.65/?(1-0.20)?=0.81%;

D)?sulphur content of?molten iron?burden?of known S?=0.12%,increases the sulfur?50%,?are:?S?=0.12/?(1+0.5)?=0.08%?charge;

E)?charge?amount of phosphorus?phosphorus?no major changes?in the melting process,?P?<0.25%?=P?hot metal?charge

Integrated?the above result,?the required?charge?configuration for the?average chemical composition:

C?charge 3.2%,?Si?2.06%,?Mn?0.81%,?charge?charge?S?charge<0.08%,?P?charge?<0.25%

(2)?determine the initial?high frequency?furnace?burden ratio

A)?returns?ratio: mainly depends on the?rejection rate?and the rate of finished products,?it?varies?with?the specific production.?Here?20%.

The new?iron and?steel scrap?ratio?b): set the?new?iron?for?X%,then?scrap as?80%- x%.?According to the?charge?required?carbon content is 3.2%,?the new?pig iron,?scrap,?scrap?the carbon content of?each is 4.19%,?0.15%,?3.28%,?can list?type:

4.19?x +0.15?(80- x)?+3.28*20=3.2*100

Obtains?x =60.0%.?The?iron?material ratio: Z15?of pig iron,scrap steel,?scrap?60%?20%?20%.

(3)?high frequency furnace?and then?according to the proportionand various charge?composition,?calculation of?charge?componentssuch as table 3.

Table 3?charge composition

(4)?high frequency furnace?iron?alloy?addition amountcalculation

A)?adding amount of?this?lack of?silicon content in?ferrosilicon0.67%,?i.e.?100 kg per?0.67?kg?of burden?add?silicon.?Thesilicon content in?ferrosilicon?is 45%,?so every?100 kilograms of?charge?must add the?ferrosilicon?weight of 0.67/0.45=1.5?kg

B)?calculation?ferromanganese?added amount of?the same method,every 100 kilograms of?charge?must join?with 75% Mnferromanganese: 0.12/0.75=0.16?kg.

(5)?high frequency furnace?making?the list of ingredients

According to the?amount of iron?ratio and?layer,?determine thevarious charge?for each batch of?charge?weight,?write a?list of ingredients.?A?known?layer of iron?500 kilograms,?is?composed ofeach batch?of iron material:?pig iron,?scrap steel::500*60%=300 kg?500*20%=100 kg,?scrap: 500*20%=100 kg,?45% ferrosilicon