Kaolin calciner waste heat and feed recovery system and method
In the method for producing a calcined kaolin pigment product, by feeding an aqueous slurry of kaolin to a spray drier which is provided with heated gases from a combustor, feeding the dried kaolin product from the spray drier to a calciner; and recovering the calcined product; the improvement is described enabling recovery of heat energy and calciner dust from the calciner, comprising: cycling the hot exhaust gases and entrained calciner dust from the calciner back to the spray drier by joining the exhaust gases and calciner dust with the heated combustor gases being provided to the calciner; and collecting the calciner dust from the drier and providing same together with the dried kaolin product as feed to the calciner.
- Assignee:
- E.C.C. America, Inc., Atlanta, GA
- Patent Number(s):
- US 4717559
- OSTI ID:
- 5416990
- Resource Relation:
- Patent File Date: Filed date 3 Jun 1986
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
DRYERS
WASTE HEAT UTILIZATION
KAOLIN
CALCINATION
CHEMICAL PREPARATION
AQUEOUS SOLUTIONS
CHEMICAL REACTORS
COMBUSTORS
DUSTS
EXHAUST GASES
RECOVERY
SPRAY DRYING
CHEMICAL REACTIONS
CLAYS
DECOMPOSITION
DISPERSIONS
DRYING
FLUIDS
GASEOUS WASTES
GASES
MIXTURES
PYROLYSIS
SOLUTIONS
SYNTHESIS
THERMOCHEMICAL PROCESSES
WASTE PRODUCT UTILIZATION
WASTES
400201* - Chemical & Physicochemical Properties
320304 - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Waste Heat Recovery & Utilization