Zhengzhou Tongding Machinery Equipment Co., Ltd. is one of the leading manufacturers and suppliers of foundry sand dryer in China. We are committed to providing high quality customized products with competitive price. If you're going to buy durable foundry sand dryer made in China, welcome to get pricelist from our factory. 5 years warranty is available.
Product Brief
Foundry sand is basic aggregate for casting molding. When material pile in open‑air or store in silo for long time, it will absorb moisture from air and carry certain water content. If sand moisture too high, it easy cause bad casting problem such as air hole and sand hole during pouring. Wet sand also easy stick together and form lump, disturb normal work of sand mixing and molding whole process.
This three‑pass foundry sand dryer optimize base on real work condition of casting workshop. Rely on three‑layer sleeve heat exchange structure to finish moisture remove and dewater. Try best keep original sand grain size, lower foundry sand moisture, output stable dry sand. Suit produce need of casting factory and foundry sand processing plant.
Product Application
Three‑pass foundry sand dryer mainly handle wet foundry sand material, fit many kinds of produce scene.
Old sand recycle process in casting workshop
Dry recycled used foundry sand, remove sand moisture, reduce casting defect, improve reuse quality of old sand.
Raw material treatment for foundry sand factory
Wet stored foundry sand raw material go through dry process, then enter next grading sieve work. Not disturb by rainy weather, guarantee factory supply goods non‑stop.
New sand processing production line match
Work as dewater unit of whole sand processing system, connect feeding and storage silo, supply qualified dry sand for later molding process.
Aggregate processing match
Also can handle grain material with similar physical property, finish moisture remove and dry work.
Function Introduction
The core function of three‑pass foundry sand dryer is continuous dewater and dry for wet foundry sand.
Wet foundry sand send into feed end by feeding device. Drum rotate at low speed, drive sand pass three‑layer sleeve cavity one by one, finish heat moisture‑remove and material cool‑down step by step.
Operator can adjust feed speed, hot air condition and drum rotate speed, flexible control discharge sand moisture, match real standard of different casting craft.
Outer drum have buffer cool‑down effect, discharge sand temperature can be controlled. Dried foundry sand go through sieve then transport to storage silo and sand‑mix machine, no need wait long time for natural cool.
Whole machine can run continuous for long time, satisfy factory large‑volume sand process demand. Match electric control operation table, all running status show directly, convenient worker check machine real‑time.
Machine reserve dust connect port, can link external dust collect device to catch fine sand dust from drying, improve workshop work environment.
Production Strength & Quality Inspection
- Casting industry have strict require for sand grain complete degree. We build special production inspection standard for three‑pass foundry sand dryer.
- Core part direct touch foundry sand such as drum and flight plate, all cut and weld in our own factory workshop. We control key process by ourselves, not simple assemble with bought finished part, make sure wear‑resist part weld firm.
- Before delivery inspection will focus check flight plate curve shape and weld tight degree, avoid too much sand grain break cause by unreasonable structure. At same time calibrate drum coaxial degree, reduce machine shake when running, lower sand grain damage from hit each other.
- After whole machine assemble finish, run no‑load test. Check seal performance, strange rotate noise and other item one by one. Only all item pass, then do anti‑rust spray paint.
- When deliver machine, we give easy‑wear part reference list, mark inspection and replace cycle for components. Customer can book visit our factory to see assemble process. Custom machine will give clear production delivery time, help customer arrange whole project schedule.
FAQ Answers
Q: How low moisture can three‑pass foundry sand dryer make foundry sand reach?
A: Under normal work condition, discharge moisture can stable keep in 0.4‑1.8%. We also can adjust parameter match real index of your casting craft.
Q: Will drying produce lots broken foundry sand grain and bad effect for sand mold use?
A: Machine improve inner flight structure, reduce sand grain hit force, can control broken rate effectively, but can not reach zero‑break. If raw material itself is brittle, fine powder output will increase a little. We can adjust machine running parameter to get better work condition.
Q: Feed foundry sand moisture change big, is machine easy to adjust?
A: Hot air temperature and drum rotate speed both can adjust. Small moisture fluctuation can solve by change parameter directly. If feed moisture difference is very big, advice add buffer sieve silo at front, stable feed status, drying result will more good.
Q: Already built casting workshop production line, can add this three‑pass foundry sand dryer?
A: Support old production line rebuild and connect. Provide size data of original feeding and silo, we adjust dryer inlet and outlet height, try to reuse old equipment, no need large‑scale factory rebuild.
Q: Machine process foundry sand for long time, which position need focus check and maintain?
A: Flight plate and two‑end seal assembly are key inspection position. Foundry sand have strong friction wear, need check wear situation regularly. Do maintain and replace follow maintain manual, make machine run stable for long time.
Q: Workshop factory height is limited, does this machine have high request for site condition?
A: Three‑pass structure body is compact, take less space than single‑drum dryer under same capacity. Send us factory length, width and height, we can make machine layout plan and evaluate site adapt situation.
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