Dry-Mix Concrete Batching Plant

What is a Dry-Mix Concrete Batching Plant

Jianxin Machinery dry-mix concrete batching plant adopts the dry-mixing first, wet-adjusting later process. It precisely mixes dry materials such as aggregates, cement and powder in proportion, and then quantitatively adds water for mixing at the discharge end or on-site to produce finished concrete.

The key difference from wet-mix batching plants lies in dry mixing first, water adding on demand. The whole system consists of five core modules: storage, weighing, dry-mix conveying, wet-adjusting batching and automatic control system. It requires a fixed site for foundation pouring and is specially designed for efficient, precise and environment-friendly mass concrete production.

How to Select the Product: When to Choose a Dry-Mix Concrete Batching Plant

Capacity and Schedule Requirements

Suitable for projects with a construction period of 1 year or more, requiring long-term stable concrete supply, and a planned capacity of ≥120m³/h, pursuing large-scale and continuous efficient production, such as large-scale real estate development, industrial park construction, and commercial concrete batching plants.

Quality and Precision Requirements

Applicable for producing high-grade concrete (C30 and above), special-performance concrete (impermeable, frost-resistant, corrosion-resistant), or concrete with extremely high requirements for slump and workability precision, such as core parts of bridges, tunnels and large-scale water conservancy projects.

Cost and Efficiency Requirements

Ideal for long-term operation, pursuing the lowest unit production cost of concrete, reducing material loss and labor costs, and adapting to construction scenarios in cities and industrial parks with strict environmental protection requirements.

Material and Site Requirements

Suitable for stably supplying various grades of concrete, or using large quantities of environmental-friendly admixtures such as fly ash and slag powder; fixed site available for special foundation pouring, with sufficient area to adapt to the modular layout of dry-mix plants.

Scenarios Not Recommended for Dry-Mix Plants

• Short-term construction (≤3 months) or multi-site mobile construction, no need for long-term fixed deployment;
• Narrow site, unable to pour special foundation, or small-batch and temporary concrete supply in remote areas;
• Only producing low-grade conventional concrete (C15-C25) with low requirements for quality stability, where wet-mix or mobile batching plants are more flexible.

Selection Tips

If you have both long-term fixed mass production needs and a small amount of mobile construction needs, you can match Jianxin fixed dry-mix batching plant + mobile dry-mix auxiliary plant to realize fixed mass production + mobile supplement collaborative operation. Jianxin provides an overall compatible solution to maximize equipment value and reduce comprehensive investment cost.

Product Advantages of Dry-Mix Concrete Batching Plant

Precise, Efficient and Controllable Quality

• Two-stage precise proportioning: Dry materials (aggregates, cement, powder) are precisely proportioned by high-precision weighing system (aggregate measurement accuracy ±1.5%, cement/water/admixture ±0.8%), then fully mixed by forced dry-mix host with dry material uniformity error ≤1%; quantitative water adding for wet adjustment during discharge completely avoids segregation in wet mixing, ensuring stable and uniform quality of each batch of concrete.

Energy Saving and Economic Operation

• Optimized energy consumption: Dry-mix process does not require continuous water adding and mixing throughout the process. The power system adopts energy-saving motors and high-efficiency transmission parts, reducing unit concrete energy consumption by 20%-25%compared with wet-mix plants; long-term large-scale production greatly cuts power and material loss costs.

Stable Structure and High Durability

• Heavy-duty fixed frame: Made of thickened section steel welded frame. After pouring special reinforced concrete foundation, the equipment runs with strong stability, reducing vibration amplitude compared with similar products, avoiding component loosening and precision deviation caused by long-term operation.

High Automation and Labor Saving

• Full-process intelligent control: Equipped with PLC special control system for dry mixing, supporting storage of dry-mix proportioning and wet-adjusting parameters (100+ mix proportions preset), full automation of batching, conveying, wet adjustment and discharge. Built with remote monitoring, data statistics and fault early warning functions, no professional technicians required for on-duty.

Mature Technology and Flexible Customization

• Modular customized adaptation: Flexibly adjust the number and capacity of storage bins, conveyor length, wet-adjusting proportioning precision, environmental protection configuration according to capacity demand, site area and concrete grade requirements, adapting to real estate, transportation, municipal, industrial and other industries.

Product Usage and Application Scope

Commercial Concrete Batching Plant

Core equipment for professional commercial concrete manufacturers, used for mass production of C15-C60 concrete and special-performance concrete (impermeable, frost-resistant, corrosion-resistant), supplying various surrounding projects, pursuing large-scale, standardized and cost-effective operation.

Real Estate and Residential Engineering

Main structure and secondary structure pouring of large-scale real estate development, indemnificatory housing and commercial complexes, requiring long-term stable supply of high-grade concrete to ensure project quality and construction efficiency.

Transportation and Municipal Engineering

Large-scale continuous pouring of highways, high-speed railways, large bridges, tunnels, airport runways, urban underground pipe corridors and municipal road reconstruction, requiring high-grade and high-precision concrete.

Industrial and Water Conservancy Engineering

Heavy structure pouring of industrial park workshops, power plants, chemical plants, and large-scale reservoirs, dams and water diversion projects, requiring special-performance concrete (impermeable, frost-resistant, high-strength) for long-term and large-scale construction.

Environmental Protection Building Materials Projects

Mass production of dry-mix finished concrete bags for small surrounding construction projects, or adapting to standardized and environment-friendly production needs of green building materials industrial parks.

Components of Dry-Mix Concrete Batching Plant

(1) Foundation and Fixed Frame

• Special poured foundation: Reinforced concrete pouring, bearing capacity ≥20t/㎡, customized size and depth according to equipment model, providing stable support to avoid vibration deviation during long-term operation.

(2) Dry-Mix Storage and Weighing System

• Aggregate storage bin: Modular design (3-6 bins optional), classified storage of sand and stone, equipped with material level sensor and arch breaking device to avoid bridging and caking, adapting to continuous feeding.
• Powder storage system: Sealed cement silos, fly ash silos, equipped with pulse dust collector and arch breaking device to prevent moisture and caking, realizing dust-free storage and conveying.
• High-precision weighing unit: Independent aggregate weighing hopper, powder weighing hopper, water weighing hopper and admixture weighing hopper, equipped with high-precision pressure sensor to accurately control material proportioning and eliminate deviation.

(3) Dry-Mix Mixing and Conveying System

• Dry-mix mixing host: Core component adopts JS series twin-shaft forced dry-mix host with high-torque drive, spiral mixing blades for fast and full mixing of dry materials without dead corners; equipped with quick-release lining plate for easy maintenance and cleaning.
• Aggregate conveying system: Wear-resistant belt conveyor with closed layout to avoid dust leakage, adjustable conveying length and angle according to site, stable feeding to weighing unit.
• Powder conveying system: Tubular screw conveyor with fully sealed structure, no dust leakage, high conveying efficiency and stable operation, accurately conveying cement and fly ash to weighing unit.

(4) Wet-Adjusting Batching and Discharge System

• Precise wet-adjusting batching system: Including clean water storage tank, admixture storage tank, quantitative water pump, equipped with flow precision control module for quantitative and uniform water and admixture adding according to dry material proportion and concrete grade.
• Finished product discharge system: Adjustable discharge hopper for docking with concrete transport vehicles and hoppers, smooth discharge without residue, adapting to large-scale batch discharge; some models can be equipped with vehicle-mounted discharge module for on-site wet adjustment after dry material transfer.

(5) Automatic Control System

• Core control unit: PLC special control system for dry mixing with touch screen panel, supporting automatic and semi-automatic dual-mode switching. Intelligent control functions: production data statistics report, automatic fault alarm, parameter abnormality early warning, realizing full-process visual control without on-site duty.

(6) Electrical and Environmental Protection System

Parameters

Working Process of Dry-Mix Concrete Batching Plant

1. Equipment Preparation: After installation and commissioning, check foundation fixation and frame connection stability; inspect electrical, hydraulic, conveying and dry-mix host systems; clean residual materials, connect 380V three-phase power for startup.
2. Material Preparation: Load aggregates, cement and fly ash into corresponding storage bins by classification, check dryness and no caking; fill clean water and special admixture into storage tank; start material level sensor for real-time monitoring.
3. Proportioning Setting: Select target concrete grade via touch screen control system, call preset mix proportion (or manually adjust parameters), confirm dry material proportion and wet-adjusting dosage, then start automatic mode.
4. Precise Weighing and Dry Mixing: Control system automatically starts batching system, quantitative discharging from storage bins, weighing of aggregates and powder; materials enter dry-mix host for forced mixing (60-90 seconds normally) until uniform dry mixture is formed.
5. Finished Product Discharge: Finished concrete is sent to transport vehicles or hoppers through discharge port with real-time flow monitoring; switch discharge mode to output dry mixture for on-site wet adjustment if needed.
6. Process Monitoring and Adjustment: Real-time monitoring of parameters (measurement accuracy, mixing time, water volume, equipment status), alarm for abnormality; one-click switch of concrete grade without affecting production continuity.
7. Shutdown, Cleaning and Maintenance: Stop feeding, empty materials, cut off power; start automatic cleaning to remove residual concrete; inspect components, conduct cleaning, lubrication and maintenance records.

Operating Precautions

Operator Qualification and Protection

• Wear complete labor protection supplies (safety helmet, protective gloves, dust mask, non-slip shoes) before operation; no loose clothing or accessories to avoid being involved in rotating parts.
• No operation after drinking, fatigue or violation; operators shall stay focused and on post without unauthorized leave.

Pre-Startup Inspection

• Basic inspection: Check foundation bolts and frame connection for looseness; ensure no obstacles or unrelated personnel around.
• System inspection: Inspect electrical system for leakage and short circuit; check hydraulic system pressure and pipeline leakage; confirm conveying system runs smoothly without jamming or deviation; clean residual materials in mixing host and weighing hopper.
• Material and parameter inspection: Ensure sufficient, dry and non-caking materials, normal material level sensor; sufficient water and admixture without deterioration; verify preset mix proportion and parameters.

Shutdown Operation and Maintenance Requirements

• Standard shutdown: Follow the process of “stop feeding → empty materials → shut down systems → cut off power”; no shutdown before emptying materials to avoid caking damage.
• Cleaning work: Thoroughly clean residual dry mixture and concrete in mixing host, weighing hopper, conveying pipeline and discharge hopper; clean dust collection bin of pulse dust collector for recycled use in low-grade concrete.
• Daily maintenance:

• Daily: Clean dust and debris, check belt tension and electrical circuits, replenish lubricating oil, inspect sensors and arch breaking devices.
• Weekly: Check wear of mixing blades and lining plates, calibrate weighing sensors, clean caking in storage bins, inspect hydraulic oil level and electrical components.
• Monthly: Replace worn parts, calibrate weighing system, check anti-corrosion layer, fasten frame and foundation bolts, inspect dust removal and sewage recovery.

• Long-term shutdown maintenance: Empty all materials, cut off power, conduct dust-proof, waterproof and anti-rust treatment; inspect monthly for ventilation and moisture-proof; fully commission before reuse.

Price and Customization

(1) Price Description

The price of Jianxin dry-mix concrete batching plant ranges from 200,000 to 3,000,000 RMB (specific price to be discussed) according to different models and configurations, with large price differences for different capacities and configurations.

(2) Customization Service

Adjust equipment model and dry-mix host specification according to actual capacity demand, adapting to 120-300m³/h capacity, flexibly increase or reduce capacity configuration to fit production needs.