Raw Material Selection And Practical Application Scenarios Of Fully‑Automatic Brick Making Machines
Fully‑automatic brick making machines allow a wide range of raw materials. Apart from basic aggregates such as cement and sand‑gravel, multiple types of industrial solid waste and recycled construction aggregates can be adopted as production raw materials. Therefore, they are widely used equipment for solid‑waste resource utilisation. Raw‑material proportioning shall be determined through tests based on product strength requirements and physical properties of materials, and random mixing is not allowed.
Available raw materials fall into several categories. Basic aggregates include river sand, crushed stone and stone chips to form the skeleton structure of finished products. Cementing materials are mainly ordinary Portland cement to guarantee mechanical performance of bricks after curing. Usable solid waste covers fly ash, slag, coal gangue, crushed recycled construction aggregates and so on. The mixing ratio of solid waste is restricted by raw‑material activity and designed product indicators. Proportioning tests shall be carried out to verify finished‑product performance before actual production. Under certain working conditions, the solid‑waste mixing proportion can reach 30%‑50%. Small amounts of admixtures may be added as needed during production to improve mixture workability and adjust early forming status of green bricks. Types and mixing dosages of admixtures shall follow relevant building‑material specifications.
The equipment is applied in multiple sectors. First, building‑material product factories produce municipal and construction‑oriented concrete bricks and blocks for housing projects and park construction. Large‑scale production scenarios mostly deploy fully‑automatic brick‑making production lines for stable mass output. Second, solid‑waste recycling projects. Construction‑waste disposal sites and fly‑ash storage yards are equipped with brick‑making sections to convert treated solid waste into building‑material products, reduce pressure from solid‑waste landfill disposal and align with policy guidelines for comprehensive solid‑waste utilisation. Third, municipal road and landscape supporting projects. Permeable bricks, grass‑planting bricks and kerb stones are manufactured for pavement construction of pedestrian roads, park green spaces and parking lots. Fourth, water‑conservancy supporting projects. Slope‑protection blocks are produced for river and embankment protection works.
For practical project selection, comprehensive assessment shall be conducted considering site conditions, power supply capacity, target brick types and expected output scale. Fully‑automatic production lines occupy larger floor space than semi‑automatic equipment and have corresponding requirements for power supply capacity and foundation construction. Compared with semi‑automatic equipment, material conveying, material distribution, demoulding and stacking are all completed by mechanical structures under fully‑automatic modes. On‑site staff are mainly engaged in monitoring, inspection and component replacement. The number of on‑site operators is lower than traditional modes. Nevertheless, maintenance personnel familiar with hydraulic and electrical systems shall be arranged to secure stable equipment operation.
Raw‑material quality directly determines finished‑product performance. Aggregate particle size, silt content and cement grade shall be controlled. Excessive impurities in recycled aggregates may lead to insufficient brick strength and appearance defects. Raw‑material screening treatment shall be completed prior to production. Freshly demoulded green bricks cannot be directly used. Sufficient curing is required to improve strength via cement hydration. Curing methods include natural curing and kiln‑chamber curing. Curing cycles shall comply with process requirements for building‑material products.
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