Energy Saving Rotary Lime Kiln Process With Advanced Structure Stable Operation

Good Quality Active Lime Plant Machinery From China Manufacturer

Energy Saving Rotary Lime Kiln Process With Advanced Structure And Stable Operation

Overview of Quick Lime Production
Active lime is produced from limestone, dolomite, chalk and other minerals with high calcium carbonate content by the calcination process under the temperature of 1000-1100 ° C. There are various processes for the active lime production, mainly including: Advanced 'Preheater-Rotary kiln-Vertical cooler' energy-saving process, Traditional 'long rotary lime kiln' process, Mixed buring vertical kiln process, Gas-fired or oil-fired vertical kiln process. The selection of the active lime process is effected by many factors, such as : the activity requirement, the fuel, the limestone sizes, production capacity, environmental-protection requirement.

We will select the most workable and efficient and economical solution based o the clients' specific requirement and conditions.

Production Process

1. Energy Saving Rotary Lime Kiln Process

Rotary kiln is one kind of furnace which is widely used for calcined active lime production in the world. It is also widely used in many industries such as construction materials, metallurgy, chemical and environmental protection. The energy-saving rotary lime kiln has the advanced structure and stable operation. It adopts the vertical preheater with low pressure loss which can effectively improve the preheating effects. The raw materials’ decomposition rate in the vertical preheater can reach to 30% before entering into the rotary kiln. It is also suitable for different fuels including pulverized solid fuel, liquid fuel and gas fuel. The final lime products have high activity. This kind of rotary kiln already have been widely used in the steel industry and chemical industry.

2. Traditional Rotary Lime Kiln Process

The long rotary lime kiln has the characteristics of simple structure and stable operation. It increases the length of the rotary kiln cylinder to improve the preheating effect, and after preheating, the limestone is entering into the calcination zone for decomposition; The limestone feeding size can be 10 ~20 mm, 20~40 mm. It can use various fuels including pulverized solid fuel, liquid fuel and gas fuel. The final lime or dolime product has relatively higher activity. This kind of rotary kiln is suitable for middle & small production lines, and is suitable for the lime production with limestone with small sizes or lower heat strength.

3. Mixed Burning Vertical Lime Kiln Process

The qualified raw materials and solid fuels are mixed uniformly according to a certain proportion and then sent to the vertical kiln through a single bucket elevator for calcination. After calcination, the final lime products are discharged from the bottom of the vertical kiln through a discharge device to the conveyor, and the conveyor sends the final lime products to the storage silo. The hot flue gas generated by calcination will firstly go into the dust collecting system, and then the clean flue gas will be emitted through chimney to the atmosphere.

Production Process

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Ningxia Baota Union Active Lime Calcination Project
200tpd Quick Lime Plant in Iran

Our Factory Picture:

Processing Equipment

Our Workshop

Henan Zhengzhou Mining Machinery Co., Ltd (hereinafter referred to as “ZK”)., founded in 1956, is a designated production unit of building materials and mining machinery designated by the National Ministry of Machinery Industry and Henan Provincial Department of Machinery and Electronics Industry. After more than 60 years of development, our company has gradually developed from a single mechanical equipment manufacturing enterprise into a comprehensive company with strong ability of the whole system researching and designing on process technology and equipment manufacturing in the fields of building materials, mining, metallurgy, environmental protection etc.

After more than 60 years of development, it has gradually developed from a single mechanical equipment manufacturing enterprise into a high-tech enterprise which is integrating scientific research, engineering, manufacturing, installation, commissioning and operation guarantee, with a net asset of more than 200 million RMB. Now, Henan ZK Corp already has been growing up to a comprehensive company with strong ability of the whole system researching and designing on process technology and equipment manufacturing in the fields of building materials, mining, metallurgy, environmental protection etc.

The company is located in Qiaolou Caizhai Industrial Zone, West 5th Ring Road, Zhengzhou City, covering a land area of more than 80000 m², with workshop area of more than 60000 m², and office area of more than 5000 m². There are 6 modern workshops, 5 heavy workshops, equipped with the largest boring and milling machine, gear hobbing machine, vertical lathe, crane and other heavy equipment in Zhengzhou region, and more than 300 sets of manufacturing equipment. This enables us to independently complete the process system and large-to-medium equipment manufacturing. ZK has its own process experimental workshop, and testing & analysis center, capable of conducting pilot tests and data analysis for solid waste and hazardous waste treatment, building materials, metallurgical materials etc. These facilities allow us to provide process package, provide strong engineering and technical support for project engineering and construction, and ensure the successful execution of customer projects.

ZK  Zhengzhou Office is located in the Science and Technology Park of National University, the West Third Ring Road of Zhengzhou City, which includes the Oversea Business Department, E-commerce Department, Domestic Business Department, R&D Center, with an office area of more than 1500 m². In recent years, our oversea business has been covering more than 100 countries and regions in the world, and our domestic business has been covering all provinces and regions in China. We have established long-term good cooperation with many large and medium-sized enterprises at home and abroad. Our E-commerce Department has built our company into a "Henan E-commerce Demonstration Enterprise"; Our R&D Centre includes “Zhengzhou Municipal Enterprise Technology Center” and “Industrial Solid Waste Disposal Equipment Engineering Technology Research Centre”, which already formed a reasonable technical echelon of scientific researchers from undergraduate to doctor, from technician to senior engineer. Our R&D Centre already has had the EPC contracting ability to independently complete the whole set of process system and equipment researching and designing in many process technology and equipment manufacturing fields.

Our main process system products includes:

1.Environmental protection process for:

Hazardous Solid and Waste Solid Treatment (sludge, shale, chrome mud, red mud, fly ash, coal gangue, etc.), Dedusting and Flue Gas Purification etc.;

2.Building materials process for:

Light Expanded Aggregate (LECA), Ceramsite Sand, Oil Fracturing Proppant, Refractory, Powder, Lime, Cement Production etc.;

3.Mineral processing process for:

Iron Ore, Bauxite Ore, Kaolin, Copper Ore, Lead & Zinc Ore, Gold Ore, Fluorite Ore, Graphite Ore etc.;

4.Metallurgical process for:

Metal Magnesium Production Process (Calcination, Pelletizing, Reduction, and Refining);

5.Calcination/Sintering Process for :

Dolomite, Limestone, Magnesite, Bauxite, Kaolin, Filter cake from Sugar Plant and Paper Plant etc….

Rotary kiln, ball mill, vertical preheater, single barrel cooler, vertical cooler, dryer, granulator, feeder, dust collector, bucket elevator, crusher, magnetic separator, flotation machine, classifier and other complete sets of mechanical equipment.

Our main products of the process system include:

Over the past years, we have not only focused on the optimization and upgrading of traditional industry processes and equipment, but also complied with the market demand, committed to the comprehensive treatment and disposal of solid waste and hazardous waste process and equipment research and development, to achieve the purpose for harmless, reduction, stability and waste recycling. Our process system and equipment products are sold well in all provinces and regions in China, and has been exported to Russia, South Korea, the United States, Canada, Japan, Britain, Saudi Arabia, Vietnam, Thailand, Indonesia, Malaysia, Nepal, Bangladesh, Mexico, Kazakhstan, Turkey, Iran, Guatemala, India, Mongolia, Africa, South America and many other countries and regions, which have been well received by our clients.

"Virtue in advance, benefit after people" is our core cultural concept; "timely delivery, timely payment" is our work style; "Honest and Reliable" is our business foundation, "Precision and excellent performance" is our working habit, "Top quality service" is our permanent pursuit. We, always adheres to the quality policy of "Survival by Quality and Development by Science and Technology". Our company had passed "ISO14001: 2015 Environmental System Certification", "ISO9001: 2015 International Quality System Certification", and "ISO45001: 2018 Occupational Health and Safety Management System Certification", "2019 Certification of Evaluation Certificate of Integration Management System of Two Modernizations", and "2020 Construction Enterprise Qualification Certificate: Grade III Certification of Environmental Protection Engineering Professional Contracting". Our company has obtained more than 30 independent patent technologies, and has been affirmed and supported by all sectors of society. We have been recognized and supported by all sectors of the society, and have successively won the titles of "High Tech Enterprise of Henan Province ", "Specialized & Innovative Enterprise Certificate", "One Hundred Growing Private Enterprises of Zhengzhou City ", "High Quality Products of Henan Province", "Famous Brand Products of Henan Province", "E-commerce Demonstration Enterprise of Henan Province" and "Zhengzhou Technology Center" and other honors. With the style of “Diligence, Pragmatism, Conscientiousness and Preciseness”, Our ZK person adheres to “Sincere cooperation, First-class products and Perfect services”, so as to achieve harmonious, win-win and common development with our clients from home and abroad.