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A device and preparation process for producing spodumene

A preparation process and technology of spodumene, applied in aluminum silicate, silicate and other directions, can solve the problem that spodumene takes away a lot of heat and is not recycled, can not greatly improve the production capacity of a single system, and reduce conduction and heat transfer. and convective heat transfer and other issues, to achieve good economic benefits and environmental protection benefits, to achieve continuous large-scale production, and to improve labor productivity.

Active Publication Date: 2016-04-13
SICHUAN CALCINER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Combined with this feature, under the premise of a certain kiln diameter and slope, in order to ensure the roasting transition time, the rotation speed of the rotary kiln can only be reduced appropriately, and the number of times and lifting height of the spodumene material in the rotary kiln will be reduced. This reduces the probability of conductive heat transfer and convective heat transfer when the material is in contact with high-temperature airflow. Therefore, using the existing separate rotary kiln roasting conversion technology for spodumene roasting treatment cannot greatly increase the production capacity of a single system
At the same time, the existing rotary kiln roasting conversion technology is used alone. The waste heat in the exhaust gas of the rotary kiln and the large amount of heat taken away by the spodumene after transformation have not been recycled, and the energy consumption is very high.

Method used

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  • A device and preparation process for producing spodumene
  • A device and preparation process for producing spodumene
  • A device and preparation process for producing spodumene

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Embodiment 1

[0036] The main structure of this embodiment, a preparation device for producing spodumene such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, it includes a coarse particle suspension preheater 1, a rotary kiln 2, a material distribution valve 3 and a grate cooler 4 connected in sequence.

[0037] The coarse particle suspension preheater 1 includes a first-stage preheating cylinder 1-1, a second-stage preheating cylinder 1-2, and a third-stage preheating cylinder 1-3 connected in sequence. The first-stage preheating cylinder 1-2 and the third-stage preheating cylinder 1-3 are equipped with volute, air inlet, air outlet, air pipe elbow and air pipe straight section, and the first-stage preheating cylinder 1-1 volute The lower part is connected to the straight section of the air duct of the second preheating cylinder 1-2 through the first-level cone 1-5 and the first-level feeding pipe 1-6 in turn, and the air inlet of the first-level preheating cylinde...

Embodiment 2

[0049] The main structure of this embodiment, a preparation device for producing spodumene such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, it includes a coarse particle suspension preheater 1, a rotary kiln 2, a material distribution valve 3 and a grate cooler 4 connected in sequence.

[0050] The coarse particle suspension preheater 1 includes a first-stage preheating cylinder 1-1, a second-stage preheating cylinder 1-2, and a third-stage preheating cylinder 1-3 connected in sequence. The first-stage preheating cylinder 1-2 and the third-stage preheating cylinder 1-3 are equipped with volute, air inlet, air outlet, air pipe elbow and air pipe straight section, and the first-stage preheating cylinder 1-1 volute The lower part is connected to the straight section of the air duct of the second preheating cylinder 1-2 through the first-level cone 1-5 and the first-level feeding pipe 1-6 in turn, and the air inlet of the first-level preheating cylinde...

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Abstract

The invention discloses a device for producing spodumene and a preparation process. The device comprises a coarse particle suspension preheater, a rotary kiln, a separating valve and a leakage-free grate type cooling machine which are sequentially connected. The preparation process comprises the steps of preheating by adopting the coarse particle suspension preheater, roasting and transforming by adopting the rotary kin, separating by adopting the separating valve, and cooling by adopting the leakage-free grate type cooling machine. According to the device, by designing the coarse particle suspension preheater, tail gas of the rotary kiln is fully utilized for preheating, thus the energy consumption is reduced; by adopting the separating valve, the spodumene discharged out from the kiln can be effectively separated, and the safe and smooth operation of the whole system is ensured; by adopting the leakage-free grate type cooling machine, an optimal cooling effect can be achieved, and heat carried away by the spodumene discharged out from the kiln is fully utilized, thus the energy consumption of the system is reduced. The device realizes large-scale production and central automatic operation control of the spodumene, thereby greatly increasing the labor productivity and being better in economic benefit and environment protection benefit.

Description

technical field [0001] The invention relates to the field of spodumene production, in particular to a spodumene production device and a preparation process. Background technique [0002] Before the spodumene is acidified, it needs to be roasted and transformed, that is, converted from α-spodumene to β-spodumene. At present, most of the spodumene roasting transformation technologies commonly used in China use rotary kiln roasting transformation alone; the spodumene roasting transformation requires a relatively long roasting time, which is not suitable for fast burning and rapid burning, and the length of the firing zone of the rotary kiln is the same as the flame of the burner. The field adjustment range is related. The rotary kiln with the suspension preheater outside the kiln is usually 8-10 times the diameter of the rotary kiln, and the dry-process hollow rotary kiln is usually 5-7 times the diameter of the rotary kiln. Combined with this feature, under the premise of a c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/26
Inventor 常捷黄祝生徐成岗代礼荣李红毅孙手棒蒋汉九陈健黄半农常乐黄贝
Owner SICHUAN CALCINER TECH
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