Twin Shaft Lime Kiln

AGICO CEMENT is a leading supplier of lime calcination equipment and complete lime production line solutions. We specialize in vertical shaft lime kilns and customized EPC projects for the lime industry. We provide one-stop services to ensure efficient, energy-saving, and environmentally friendly lime production.

twin-shaft lime kilns structural features

1. The twin shafts lime kilns have two parallel kiln chambers, which are connected through the connecting channel at the lower part of the lime kiln body. The calcination process has two characteristics: parallel flow and regenerative(heat storage). Parallel flow means that the high temperature flue gas and the limestone flow in the same direction when the limestone is tempered. This is conducive to calcining high-quality active lime. Heat storage means that the high temperature flue gas of kiln chamber 1 enters kiln chamber 2 through the connecting channel at the lower part of the two kiln chambers. The high temperature flue gas flows upward in kiln chamber 2 to preheat the limestone in the preheating zone to a higher temperature. The schematic diagram of the structure of the kiln body explains the working principle very well. This principle makes full use of the waste heat of the exhaust gas to ensure that the kiln has high thermal efficiency.

2. The masonry inside the kiln body is to build refractory materials of different materials according to the different characteristics and working temperature of the working zone, so as to meet the use requirements of each part.

twin shaft lime kiln
twin shaft lime kilns

Specifications and Technical Characteristics of Twin-shaft Lime Kiln

1. Production capacity: 300t/d-800t/d. The operation flexibility of the twin-shaft lime kiln can be from 70% to 100%. Take 300t/d lime kiln as an example. The production capacity can be adjusted arbitrarily within the range of 210t/d-300t/d, and stable operation can be achieved without affecting the quality and consumption indicators.

2. Limestone particle size: 30mm-60mm, 40mm-80mm, the particle size range ratio is 1:2.

3. Type of fuel: The twin-shaft lime kiln can use blast furnace gas, converter gas, coke oven gas from the iron and steel industry, calcium carbide furnace tail gas from the calcium carbide industry, natural gas, producer gas, liquefied petroleum gas, heavy oil, pulverized coal and other fuels. The highest single kiln production capacity of pure blast furnace gas can reach 400t.

4. Lime products: lime quality is good, the activity is 360ML (the highest can reach 400ML, 4N HCL method for 10 minutes), and the CO2 residue is less than or equal to 2%.

5. Low heat consumption: 860kcal/kg lime.

6. High operation rate: 48 weeks of continuous operation per year.

twin shaft lime kiln working principle
twin shaft lime kiln calcination process
twin shaft lime kiln calcination process
twin shaft lime kiln calcination process
Burning process showing chamber NO.1 burning
twin shaft lime kiln calcination process
Burning process showing chamber NO.2 burning

Successful Performance of Twin-shaft Lime Kilns

S/NNAMECAPACTYQUANTITYREMARKS FUEL
1Ningxia Jinyuyuan Chemical Group600t2 twin-shaft lime kilnsCalcium carbide furnace exhaust gas pulverized coal
2Heihe Longjiang Chemical Co,Ltd.300t1 twin-shaft lime kilnsPulverized coal
3Inner Mongolia Shuangxin Energy Tech600t4 twin-shaft lime kilnsCalcium carbide furnace exhaust gas pulverized coal
4Fareast Special Aluminum Co,Ltd.300t1 twin-shaft lime kilnsNatural gas
5Jiangsu Binxin Steel Group600t4 twin-shaft lime kilnsConverter gas, pulverized coal
6Heibei Donghai Special Steel Co.,Ltd.600t
650t
6 twin-shaft lime kilnsPulverized coal
7Tangshan Yanshan Iron&steel Co, Ltd.600t2 twin-shaft lime kilnsPulverized coal
8Guandong Guoxin Industrial Limited600t1 twin-shaft lime kilnsPulverized coal
9Shandong Rizhao Lubi New Material Technolgy Co Ltd.600t4 twin-shaft lime kilnsConverter gas mixed with coke oven gas
10Shandong Xinhua Special Steel600t2 twin-shaft lime kilnsPulverized coal
11Lianyungang Yaxin Iron&Steel Co.,Ltd.600t1 twin-shaft lime kilnsPulverized coal
12Heibei Anfeng lron&Steel Co,Ltd.600t6 twin-shaft lime kilnsPulverized coal
13Fujian Dingsheng Steel Co., Ltd.600t1 twin-shaft lime kilnsPulverized coal
14Hebei Huaxi Special steel600t2 twin-shaft lime kilnsConverter gas, pulverized coal
15Shanxi Zhongsheng Steel Co., Ltd.600t1 twin-shaft lime kilnsPulverized coal
16Zhongxin Steel Group Co., Ltd.600t3 twin-shaft lime kilnsConverter gas
17Xinji Aosen Iron&Steel Co.,Ltd. pulverized coal600t1 twin-shaft lime kilnsPulverized coal
18Handan Group Fengda Metallurgy Material Co.,Ltd.600t2 twin-shaft lime kilnsNatural gas system revamping
19Changzhou Jinzhan Building Material Co.,Ltd.600t1 twin-shaft lime kilnsPulverized coal
20Minyuan Iron and Steel Group Co.,Ltd.600t2 twin-shaft lime kilnsPulverized coal, converter furnace gas
21Hbis Group Tangsteel Company680t
400t
2 twin-shaft lime kilnsConverter furnace gas
22Haicheng Hengsheng Foundry Co.,Ltd.600t1 twin-shaft lime kilnsConverter furnace gas
23Changshu Longteng Special Steel Co.,Ltd.500t1 twin-shaft lime kilnsPulverized coal
24Shandong Taiyang Paper Co.,Ltd.600t1 twin-shaft lime kilnsPulverized coal, EPC
25Shandong Zhongxin Calcium Co.,Ltd.600t2 twin-shaft lime kilnsPulverized coal, EPC
26Anhui Jianghua Calcium Co.,Ltd.600t2 twin-shaft lime kilnsPulverized coal, EPC
27Hebei Tianfeng Calcium Co.,Ltd.600t1 twin-shaft lime kilnsPulverized coal, design+non-standard
28Jiande Jianfeng Calcium Co.,Ltd.600t1 twin-shaft lime kilnsPulverized coal, EPC
29Chifeng Zhongtang Special Steel Co.,Ltd.600t2 twin-shaft lime kilnsPulverized coal, converter furnace gas
30Jiangyou Shuyu Industrial Co.,Ltd.600t2 twin-shaft lime kilnsPulverized coal
31Guangxi Sun Paper Co.,Ltd.600t2 twin-shaft lime kilnsPulverized coal, natural gas
32Isatis Sepid Negin Lime400t1 twin-shaft lime kilnsNatural gas, heavy oil
33Xiamen Xiangsheng Nickel Co.,Ltd.(Indonesia)600t2 twin-shaft lime kilnsPulverized coal, design+non-standard
34Chunyang Xinyou Industrial Limited Company600t1 twin-shaft lime kilnsCoke oven exhaust gas pulverized coal EPC
35Shandong Lubi Construction Materials Limited Company600t1 twin-shaft lime kilnsCoke oven exhaust gas pulverized coal, design+key equipment
36Chongqing Hongqingda Industry Co.,Ltd.800t1 twin-shaft lime kilnsEPC, calcium carbide tail gas, natural gas
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