Key points for raw material compatibility and compliance in the selection of fully automatic brick making machines
The fully automatic brick making machine is equipment tailored for the green transformation and solid waste resource utilization in the field of building materials production. Relying on mechatronic control and molding technology, it achieves full-process automation from raw material mixing and distribution to molding and palletizing. Compared to traditional sintering processes, it meets policy requirements in terms of energy consumption control and environmental compliance, and is widely used in municipal infrastructure, prefabricated building support, and industrial solid waste treatment. A common configuration for small brick factories is a single multi-functional machine paired with a material mixer, with an annual production capacity of up to 1 million cement bricks. The rationality of model selection, the adaptability of raw materials, and compliance control directly affect the stable operation of the production line and overall efficiency.
Fully automatic brick making machines on the market can be divided into three categories based on their core processes: hydraulic models, vibrating models, and composite models, each suitable for different production needs and raw material characteristics. Hydraulic models rely on a hydraulic system to provide forming pressure, which can be adjusted within the range of 15–30 MPa. The compactness of the brick blank is uniform, and it can accommodate a higher proportion of solid waste raw materials, making it suitable for producing higher-strength blocks, curbs, and other products. In 2024, the supporting rate of hydraulic models in solid waste-based brick making projects reached 64.3%. Vibrating models use a synergistic effect of high-frequency vibration and pressure for forming, and their production pace is suitable for conventional products such as permeable bricks and standard bricks. They are a common choice for small and medium-sized production lines. Composite models combine the characteristics of both processes, allowing for flexible switching between brick types. They are mostly used in large-scale integrated building material production lines, and when used in conjunction with automatic brick stackers and plate feeders, they can optimize operational efficiency.
Raw material adaptation is a crucial step in the practical operation of fully automatic brick making machines. Influenced by policy guidance and cost control, the blending of industrial solid waste has become a common practice in the industry. National policies explicitly require that enterprises using construction waste, fly ash, coal gangue, and other solid waste as raw materials must incorporate a minimum of 70% solid waste into their production process in order to be included in the green factory evaluation system. Construction waste must undergo pretreatment, with the particle size of the raw material controlled within 600mm. After crushing and screening, different particle sizes of recycled aggregates are obtained. The equipment must be capable of handling raw materials with moisture content ranging from 5% to 8%. Excessively high moisture content can cause mold sticking and blockage, while excessively low moisture content can affect the strength of the bricks. Some models are equipped with a built-in knowledge base for solid waste molding, which can automatically match parameters to reduce issues such as cracking and dimensional deviations in the brick billets.
The operation of equipment must meet corresponding energy consumption and environmental compliance standards. The relevant energy efficiency standards implemented in 2024 specify that the comprehensive energy consumption per unit product should not exceed 0.12 tons of standard coal per 10,000 standard bricks, and the electricity consumption limit should be controlled at 8.5 kWh per 10,000 standard bricks. In terms of environmental protection, the equipment must meet the requirements of noise level ≤75 dB and dust emission ≤8.9 mg/m³. Some areas adopt color steel plate semi-enclosure treatment to control noise, and production is prohibited during specific periods in the afternoon. Additionally, a temporary storage room for hazardous waste must be set up to collect mechanical maintenance waste, which will be disposed of by qualified units. Export models must be compatible with international carbon data collection standards such as PCF, PAS 2050, and CBAM before entering the European and American markets.
When selecting and operating equipment, it is necessary to consider production scale, raw material type, and long-term benefits. Small and medium-sized brick factories can choose economical vibrating machine models, with acquisition costs controlled at 150,000 to 250,000 yuan per unit. However, it should be noted that their unit power consumption is relatively high, and the scrap rate may reach over 8%. For large-scale production or solid waste treatment projects, it is recommended to choose hydraulic machines. Although their acquisition costs are higher, they can stably achieve a high proportion of solid waste blending, and the total cost of ownership over five years has certain advantages. For production lines centered on solid waste utilization, it is important to focus on verifying the equipment's molding pressure adjustment range, mold wear resistance, and formula adaptability. For machines with TiAlN nano-composite coating on the mold surface, the wear life can reach 620,000 cycles, and they are suitable for handling highly abrasive raw materials.
Equipment operation and maintenance, as well as accessory support, impact production continuity. It is necessary to inspect the lubrication system daily, and apply specialized lithium-based lubricating grease to components such as the main shaft and bearings. Clean the oil tank filter screen weekly, and replace the hydraulic oil every six months. Before feeding raw materials, they must be filtered through a 10mm-aperture screen to remove hard impurities and prevent damage to molds. After daily shutdown, clean the residual raw materials in the hopper and molds, and apply mold release agent to prevent rust and sticking. Among the main components, servo motors from brands such as Inovance Technology and INVT have good market recognition. Domestic hydraulic systems have achieved import substitution, and when purchasing accessories, it is necessary to confirm the supplier's after-sales network coverage capability.
The industry development is showing a trend of parallel advancement towards intelligence and greenification. In 2023, the sales of models equipped with IoT remote monitoring and automatic fault diagnosis functions increased by 28.7% year-on-year. Digital twin technology has begun to be applied in equipment debugging, allowing for optimization of process parameters in a virtual environment. The introduction of photovoltaic direct-drive systems and waste heat recovery technology for air compressors has helped reduce equipment energy consumption. In terms of export markets, the demand growth rate in Southeast Asia and the Middle East is within a reasonable range. In 2023, exports increased by 23.6% year-on-year. Equipment needs to adapt to local power grid fluctuations within ±5%, as well as raw material characteristics.
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