Brief Introduction
At Spark Carbon, quality is the top mission for our operation, our
production starts from choosing the best raw material from domestic
and abroad to ensure the best quality from the beginning, our
petroleum coke is from CNPC Fushun, needle coke is from Conoco
Phillips 66 and Mitsubishi. We possess sophisticated manufacturing and
inspection equipment, provides 100% inspection and reporting on each
product delivered to customers
Graphite Electrode Production Process
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STEP 01
High quality Needle coke or petroleum coke is calcined,
crushed and screened into proper sizes for production
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STEP 02
Automatic Dosing System
Calcined petroleum coke and needle coke are mixed with pitch
in controlled proportion via our automatic dosing system
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STEP 03
3500 ton Horizontal Extruder
The above mixed paste is extruded into green electrodes.
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STEP 04
Primary Ring Baking Furnace 32 Chamber
Green electrodes are primary baked in our ring baking furnace
to remove the volatile matter.
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STEP 05
High Pressure Impregnation Tank
Primary baked electrodes are impregnated with special pitch to
increase the density and strength.
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STEP 06
Secondary baking-Tunnel Kiln
Impregnated electrode are put into Tunnel kiln for secondary
baking to coke the pitch
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STEP 07
DLW Graphitization Furnace
Baked electrodes are then heated up to 2800-3000 C in
lengthwise electric resistance furnaces to convert carbon to
graphite.
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STEP 08
CNC Machining line
Electrodes and nipples are machined within well-defined
tolerances on automatic machine line are machined in required
diameter and matching end sockets to accept threaded nipples.
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STEP 09
Quality Inspection
ISO9001
OHSAS
ISO14001
Bending Strenth Measure Equipment
CTE Measure Equipment
Sulphur Analyzer
EModumeter
Lab