Cryogenic Ultrafine Pulverizer

Xingshengwei Machinery acts as professional manufacturer and direct supplier of Ultrafine Pulverizer, focusing on low-temperature cryo-grinding solution for heat-sensitive, elastic and fibrous raw materials worldwide. Our cryogenic ultrafine pulverizer adopts liquid nitrogen refrigeration at -196℃ to embrittle tough materials before ultra-fine crushing, avoiding thermal decomposition of active ingredients, widely favored by medium and large processing factories for stable, high-yield micron powder production with flexible customized configurations。

Our industrial-grade Cryogenic Ultrafine Pulverizer independently developed by Xingshengwei Machinery breaks the limitation of ordinary room-temperature grinders which cannot process high-elasticity, high-oil and heat-labile raw materials. The whole set integrates precooling silo, closed cryogenic conveying cabin, high-speed crushing chamber, airflow classification system and cold gas recycling pipeline, forming a full closed-loop low-temperature production line.

Different from conventional crushing equipment generating frictional heat during high-speed rotation, this cryogenic pulverizer uses liquid nitrogen as cold source to reduce raw material temperature to its brittle point in advance; flexible substances like natural rubber, plant fiber turn crisp instantly under ultra-low temperature, then complete ultra-fine pulverization via impact, shear and collision inside grinding cavity without ingredient loss or oxidation deterioration.

All material contact parts adopt standard 304 stainless steel, food-grade polishing treatment to satisfy GMP production requirement for pharmaceutical and food industry; the outer shell is equipped with multi-layer sound insulation cotton to cut running noise below 75dB, meeting factory environmental protection standard. We support standalone lab small model and full-automatic continuous industrial large unit, flexible switching between pilot test and mass production according to client’s daily output demand, which is the core advantage why global bulk buyers choose our cryogenic pulverizer over peer brands.

Fine Feature Description

1.Closed-loop cold recovery design: Unused cold air after crushing flows back to pre-cooling bin cyclically, cutting liquid nitrogen consumption by 25%~32% compared with open-type cryogenic grinders, effectively lowering long-term production cost for buyers；

2.Intelligent PLC temperature adjustment: Touchscreen real-time display of cavity temperature from -20℃~-196℃, operators set target temperature based on different raw material brittle point automatically, no manual repeated debugging, reducing operation threshold and human error；

3.Frequency conversion graded powder selection: Built-in variable-frequency classifier screens qualified fine powder into cyclone collector automatically, oversized coarse particles circulate back to crushing chamber for regrinding, uniform finished fineness without uneven granularity, greatly improving finished product yield rate；

4.Modular disassembly structure: Grinding cavity, feeding bin and collecting barrel are quick-dismantling design without specialized tools, convenient daily cleaning and material switching, effectively avoiding cross-contamination when processing different batches of raw materials；

5.Multi-safety protection configuration: Overload protection, low-temperature pipeline anti-leak alarm, oxygen concentration monitoring for closed workshop, preventing frostbite and mechanical failure during long-time continuous operation。

Specification Parameter

Working Principle

The whole cryogenic ultrafine pulverizing system follows three core processing steps: pre-cooling embrittlement → high-speed ultrafine crushing → airflow closed classification & cold recycling.

1.Pre-cooling Stage: Raw materials are transported into sealed pre-cooling silo, liquid nitrogen continuously injects into silo to lower internal temperature, raw materials absorb cold energy until reaching own brittle critical temperature, elastic texture converts into crisp state which is easy to smash without high-temperature melting during crushing；

2.Crushing Stage: Pre-chilled brittle materials enter high-speed rotor crushing chamber, high-speed rotating tooth disc and blade produce continuous impact, friction and shear force, raw materials split into fine powder instantly under multi-direction mechanical force；

3.Classification & Cold Recycle: Mixed powder flows upward with circulating cold air into variable-frequency classifier; powder meeting target fineness is collected by cyclone separator and pulse dust collector; unqualified coarse powder drops back crushing cavity for secondary grinding; most residual cold gas is recycled to pre-cooling bin to realize energy-saving closed circulation.

Wide Application

Our Cryogenic Ultrafine Pulverizer covers 6 major downstream industries, solving the universal crushing pain points of various hard-to-process raw materials:

1.Pharmaceutical Industry: Chinese herbal medicine (ganoderma, antler, cordyceps), oily proprietary medicine raw materials, biological extract residues, avoid active pharmaceutical ingredient thermal inactivation during crushing；

2.Food & Additive Industry: Spices, cocoa butter, nut kernel, high-fat grain powder, freeze grinding keeps original fragrance and nutrition without oil leakage or paste blockage；

3.Plastic & Rubber Recycling: PP, PE, EVA, silicone rubber, waste tire rubber powder, low-temperature brittle grinding turns elastic waste into uniform fine powder for reproduction raw material；

4.Cosmetic Raw Material: Plant extracts, beeswax, natural pigment, ultra-fine grinding improves raw material absorption effect of finished cosmetics；

5.Chemical Industry: Heat-sensitive resin, adhesive raw material, wax chemical raw material, prevent chemical denaturation and spontaneous combustion caused by frictional heat；

6.Feed & Biological Field: Animal horn, viscera dry product, probiotic raw material, low-temperature processing retains biological activity of feed additives.

Operation Precautions

1. Pre-operation Check

•Inspect all pipeline sealing of liquid nitrogen system before startup, confirm no refrigerant leakage; check fastening of rotor parts and intact of safety protective cover, prohibit startup with loose components；

•Operators must wear low-temperature resistant gloves, dust mask and protective goggles to prevent liquid nitrogen frostbite and powder inhalation injury; ensure workshop keeps good ventilation, especially for closed factory building with oxygen detection equipment online。

2. Running Control Points

•Feed raw materials gradually and uniformly, avoid excessive bulk feeding leading to cavity blockage; adjust liquid nitrogen inflow and rotor speed according to raw material property, never overload continuous operation over 12h without downtime inspection；

•Real-time monitor cavity temperature, for high-oil raw materials keep lower pre-cooling temperature to prevent raw material melting and bonding inside grinding chamber。

3. Post-use Maintenance

•Shut down equipment after empty running for 3min to clear residual powder inside cavity; disassemble quick-release parts and clean with soft brush, clean food-grade model with neutral disinfectant after each batch of pharmaceutical/food production；

•Lubricate main bearing monthly, inspect wear degree of crushing blade and classifier screen regularly, replace damaged spare parts timely to guarantee stable finished fineness in long-term production；

•Empty residual liquid nitrogen inside pipeline when long-term shutdown, seal all feed and discharge ports to avoid moisture entering cavity causing rust.

Xingshengwei Machinery Company Advantages

As a professional Cryogenic Ultrafine Pulverizer manufacturer with over 12 years of R&D and export experience, Xingshengwei Machinery owns independent production workshop and laboratory testing center, core competitiveness supporting global bulk procurement:

1.Independent R&D capability: Own mechanical design team, accept non-standard customization on capacity, fineness, automatic degree according to client’s raw material test report, provide free raw material grinding test service before order placement；

2.Strict quality control: All finished machines run continuous 72h no-load and load aging test before delivery, key spare parts adopt famous brand bearings and electrical components, whole machine warranty 18 months, lifetime cost-effective spare parts supply；

3.Global after-sales system: Overseas local agent technical guidance + remote online debugging, arrange engineer on-site installation and training for large industrial production line, solve operation problems within 24h response；

4.Cost advantage: Direct factory supply without middleman markup, flexible MOQ for lab small equipment and bulk industrial order, support OEM/ODM brand customization for global distributors；

5.Rich export experience: Products have been exported to Southeast Asia, Europe, North America, Australia over 38 countries, familiar with CE certification, customs clearance document for different regional import standard.

FAQ

Q1: Can your cryogenic ultrafine pulverizer grind rubber & soft plastic that cannot be crushed by normal room-temperature grinder?

A: Yes, it’s our core product advantage. Liquid nitrogen cools rubber/plastic to brittle point under -120℃\-196℃, elastic material turns crisp and can be ground into 80\600mesh fine powder smoothly, no melting or adhesion problem during whole processing.

Q2: How much liquid nitrogen consumption per kg finished powder? Can you save nitrogen cost?

A: Our closed cold recovery design reduces nitrogen consumption 25%+ vs ordinary open cryogenic mill; average consumption 0.8~1.5L LN2 per kg powder, specific data depends on raw material property, we calculate accurate consumption after free raw material test for clients.

Q3: Do you support free sample grinding test before order? How long for customized machine production cycle?

A: Free raw material test available if clients send small sample; standard model delivery cycle 7\15 working days, non-standard customized industrial line around 25\40 working days after deposit confirmation.

Q4: Is the equipment compliant with food/pharma GMP requirement?

A: Material contact parts use full 304 stainless steel with mirror polishing, meet GMP and EU food safety standard; we can provide relevant material certification document for import customs clearance.

Q5: What’s your warranty policy?

A: Whole machine 18-month warranty from delivery date, core wearing parts provide preferential purchase price for lifetime; remote free technical guidance all the year round.