Is pyrolysis char the same as commercial carbon black?
No. It contains several original carbon black grades plus inorganic tire additives, sulfur and residual organics. It must be processed and characterized as recovered carbon black; performance depends on the source and compound.
Why is steel removal required twice?
Pre-shredding exposes and removes most bead and belt wire, but fine wire can remain in the char. A second magnetic separation protects the mill and lowers metal contamination in the final product.
What temperature is used for waste tire pyrolysis?
Many commercial processes operate across roughly 400-650 C. The correct profile depends on reactor design, heating rate, residence time and the desired oil, gas and char balance.
Can grinding reduce rCB ash?
No. Grinding changes particle-size distribution and dispersion. Ash reduction requires upstream feed control, physical separation or a chemical demineralization route followed by washing and drying.
Which rCB test data is needed for mill selection?
Provide bulk density, moisture, ash, volatile content, current PSD, target D50/D90 or sieve residue, hourly output and intended application. A representative sample is strongly recommended.
What fineness can CRGM mills produce?
The supplied catalog range is 200-2500 mesh for CRGM1000/2000 and 150-2000 mesh for CRGM3000. Mesh is only a screening reference; laser PSD should define critical D-values.
How much rCB can replace furnace carbon black in rubber?
There is no universal percentage. Replacement is formulation-specific and must be validated through mixing, cure, tensile, abrasion, dynamic and aging tests. Non-critical rubber goods usually tolerate more substitution than demanding tire components.
Is a Raymond mill suitable for rCB?
It can be useful for coarse powder or pre-grinding. Where low coarse residue and narrower fine PSD are required, a ring roller mill with dynamic classification is usually the stronger finishing option.
Should a double-roll crusher be used before the CRGM?
It is suitable for cooled, brittle, de-wired char lumps above the mill feed limit. It is not the correct machine for whole elastic tires or steel-rich feed.
How is rCB dust controlled?
Use enclosed transfer, balanced negative pressure, pulse bag filtration, conductive grounding, suitable explosion/fire risk controls and strict housekeeping. Local codes and a site-specific dust hazard analysis govern the final design.
Can the non-condensable gas heat the reactor?
Often yes after suitable cleaning and pressure control. Gas composition and quantity vary, so the burner, gas train, flare and safety interlocks must be engineered for the actual process.
What are the main CRGM wear parts?
Grinding rollers, rings, pins, classifier blades, turnplate components, seals and filter bags are common planned items. Feed cleanliness and correct airflow materially affect service life.
How is final capacity guaranteed?
Capacity should be tied to a defined feed sample, moisture, product fineness and test method. Cronus uses sample testing and project data to establish the contractual selection and acceptance condition.
