Uniform drying dust-proof large capacity energy-saving and stable suitable for grain ore residue and other materials

Product Overview

    Zhengzhou Wangu Machinery Co., Ltd., established in 1998, is a distinguished high-tech enterprise in China specializing in grain drying and industrial sludge/residue drying solutions. As a contributing drafter of the Chinese National Standard for Grain Dryers and a governing unit of the China Drying Association, Wangu combines robust R&D capabilities with extensive practical engineering experience.

    Our Rotary Drum Dryer (Rotary Dryer) is specifically engineered for high-viscosity, high-moisture materials, such as apple/pomace, brewers' spent grains (DDGS), soybean residue, cassava dregs, and municipal sludge. Unlike standard dryers, the Wangu system integrates a unique anti-bonding structure and heavy-duty design to solve the critical industry challenges of material caking and scale adhesion during the drying process.

    This system is capable of reducing moisture content from as high as 85% down to ≤12% in a single pass, making it the ideal solution for the feed industry, biomass energy production, and organic fertilizer manufacturing.

Key Features 

  Superior Anti-Caking & Uniform Drying
    To address the stickiness of materials like fruit pomace (high sugar content) or soybean residue (high protein), the dryer features a heavy-duty dispersing device and a double-layer lifting board design. This structure ensures the material is fully dispersed into a curtain within the hot air stream, preventing agglomeration and ensuring uniform heat distribution.

Heavy-Duty Construction for Longevity
    The drum body utilizes thickened steel plates (12-18mm), significantly thicker than conventional industry standards. This robust construction ensures resistance to abrasion and corrosion under prolonged high-temperature loads, drastically extending the equipment's lifespan compared to standard 6mm shell designs.

High-Efficiency Thermal System
    The system is typically paired with a mechanical chain grate hot air furnace (coal or biomass), achieving a thermal efficiency of >90%. The grate speed is infinitely variable, ensuring complete fuel combustion and stable operation. Alternatively, the system can be configured with gas or oil-fired furnaces to meet varying environmental regulations.

Intelligent & Flexible Control
    Equipped with variable frequency drives (VFD) and centralized electrical control, the system automatically monitors inlet/outlet temperatures and adjusts the drum speed or feed rate accordingly. This automation guarantees consistent output moisture content and minimizes manual intervention.

Applications

· Feed Processing: Drying of apple pomace, citrus pulp, brewers grains, distillers grains (DDGS), soybean dregs, and corn germ for the production of high-fiber animal feed.
· Biomass Energy: Processing sawdust, wood chips, bark, and cassava dregs for biomass pellet fuel production.
· Environmental Protection & Fertilizer: Dewatering and sanitizing municipal sludge, chicken manure, and horse manure for organic fertilizer production or safe disposal.
· Industrial By-products: Drying of starch residue, monosodium glutamate residue, and various chemical filter cakes.

Core Selling Points

Massive Single-Pass Dewatering

    Achieve a dramatic moisture reduction from 85% to 13% in a single pass. This eliminates the need for pre-dewatering systems, saving floor space and reducing overall project capex.

"Zero Residue" Self-Cleaning Design

    The unique double-layer lifting board and internal dispersing mechanism ensure that no material sticks to the drum walls. This solves the common problem of "dead zones" and material degradation found in competitor models, ensuring 100% product discharge.

Built to Last: 12-18mm Drum Shell

    While standard dryers use thin shells (approx. 6mm) prone to wear and perforation, Wangu dryers feature a drum shell thickness of 12-18mm. This provides exceptional resistance against abrasion from sandy residues and corrosion from acidic fruit pulps, ensuring a lifespan of over a decade in harsh environments.

Turnkey Engineering & Support

· Custom Process Design: We test your material or simulate conditions to design the optimal lifting blade layout and retention time.
· On-site Installation: Our engineers guide the installation and commissioning on your site.
· Training: Operational training for your staff to ensure smooth startup.