Lightweight Expanded Clay Aggregate--leca Production Line with ISO certification

LECA plant

HDI series LECA plant is successfully researched and produced by our company, according to the physical and chemical properties and mineral composition of the raw material, reasonable blending, adopting the dynamic sintering technology, waste heat recovery and utilization, realizing the continuous production. HDI LECA plant is featured with safe, environmental protection, clean, energy saving. The Capacity of HDI LECA plant is 20,000 M3/a, 30,000 M3/a, 50,000 M3/a, 60,000 M3/a, 100,000 M3/a, 200,000 M3/a. HDI LECA plant could adopt the traditional raw material such as clay, shale, etc to produce high quality LECA. It could also adopt the solid waste, such as fly ash from coal power station, biochemical sludge, municipal sludge, contaminated lake/ harbor /river sediment, Auto shredder residuals, Mining and mining refining waste, Paper mill sludge, Fly ash from a range of industries to produce LECA, by which it is a good way to reuse the solid waste. It has the good social benefit and environment friendly. HDI LECA plant is most suitable for the mining company, electric power station, paper mill to transfer the solid waste discharging to be green LECA material.

LECA introduction

LECA takes clay or mild clay as raw material, by the processing of pelletizing, burning to be expanded in rotary kiln. LECA possess the character of lightweight, high strength, low water absorption, thermal insulation, frost resisting，anti-corrosion,etc. LECA is widely used in the field of roof slope, heat insulation concrete, waste water treatment, landscaping and soilless culture, etc.

LECA manufacturing technique

HDI series LECA plant including the follow systems : raw material homogenizing system, pelletizing system, sintering system, cooling and waste heat recovery system, dust collecting system. The core equipment of this plant is new generation high efficiency dumbbell shape rotary kiln, which increase the diameter of the preheating part, improve the preheating effect; adopting new energy saving heat exchanger, greatly increasing the heat exchange effect; adopting fish scales steel seals, with perfect seal effect, making the sintering temperature rapidly up to 1200℃ beneficially for the expand of the green pellet ; improve the stainless steel structure of the middle changeover portion, greatly reduce the leakage of the rotary kiln changeover portion.

The brief description of the process of LECA manufacturing technique: raw material mixing—pelletizing— screening— rotary kiln burning —stack— finished LECA（packing）。 

Main date of the LECA and LESA produced by HDI LECA Plant

LECA application

Our Service

Our team are committed to providing the highest level of service, spare parts and training in the material and processing industries. We are here to support our customers 24/7 with the following:

● Doing the Laboratory Test, small scale test, pilot scale test for all kinds of raw material for lightweight aggregate such as shale, flyash, coal gangue, industrial sludge, clay, sea and river sludge, all kinds of tailings

● Doing the engineering design，project contracting for the lightweight aggregate production line in all kinds of raw material and scale (20,000-200,000 m3 per year)

● Designing and customizing rotary kiln and accessory equipment for lightweight aggregate

● Designing and customizing all kinds of industrial rotary kiln ( direct fire or indirect heating ) upon customer’s raw material and thermal technical requirements

● supplying the spare sparts and maintenance service for every kinds of industrial rotary kiln.