Carbon Black Particle Breakage
Kevin,
Your question is not very clear to me. Could you please rephrase it? I have extensive experience in pneumatic conveying of carbon black. Based on this experience breakage of carbon black can only be reduced by using as low a conveying velocity as possible. Such as a low velocity can only be obtained by the use of dense phase conveying. Product quality will be greatly affected i.e., get worse, if carbon black particle breakage is high. This is because due to breakage, carbon black particles revert to their original "fuff" form, which leads to mixing problems in downstream equipment.
Regards,
Amrit T. Agarwal
Consulting Engineer
Pneumatic Conveying Consulting
Email: polypcc@aol.com
Ph and Fax; 304 346 5125 ■
Re: Carbon Black Breakage
thank you for your reply.
so i can introduce the pneumatic conveying system,
H-length: 42m
V-length: 20m
D=152
bend : 4 D/R=3
using pressure regular and laval nozzle to control air flow
when the pressure of buffer tank is 0.8Mpa, from result i think conveying is stability, and carbon black breakage is low and i can hear the moving of carbon black plug ,
if the pressure of buffer tank is less than 0.6MPa, espically less 0.4MPa, so the conveying is abnormal, and the breakage of carbon black is higher than that of 0.8MPa,
so i think that is intersting to me, because of the conveying system transport 6 kinds carbon black, so i can not give a specify value of breakage , but i can sure using the conveying system , the breakage of carbon black have an average breakage of 12%
dear Amrit, would you like to give me some advice about the breakage of carbon black?
thank you for your consideration
best regards
■
Carbon Black Particle Breakage
Dear Kevin,
Please send your request to my email address given above. I will analyze your problem and send you my recommendations.
Regards,
Amrit Agarwal
Consulting Engineer
Pneumatic Conveying Consulting ■
Re: Carbon Black Breakage
Kevin
at leas in my experience with pneumatic conveying of sponge iron , we meashured degradation as a function of accumulated impact energy.
That menas the ruling factor is particle velocity, then number of impacts , of course each impact will have its own velocity .
In the design of the HITemp system in Monterrey Mexico Impact energy was the ruling factor as they wanted to keep the particle as large as possible.
we found out that the particle breakes signifivcantly at a set energy , before hardly anything , so the change from a pneumatic conveyor to a pneumatic mill was very clear , we kept the pipeline at the bends always below the critical velocity.
Otherwise the sponge iron ended in the slag and the dust collectors , and not in the liquid bath.
Marco ■
Carbon black breakage
hello , everyone
I will take a task to analysis the carbon balck particle degradation, and I will spend about one and a half month on test, i think it is of acceptable from my expermental result , that means the breakage of carbon black is not very damage to rubber quality, also the trouble problem is how to take samples, and i find it is interested, if the pressure of resource air power excess 8 kgf, so the breakage is not high, but the pressure is low 5 kgf, the breakage is high, from my opinion and expermental data, i think pressure low 5kgf, the conveying is abnormal, that lead to the breakage is high, and some people take such a task?
■