Method for preparing deeply processed lime by using carbon-containing shale as fuel
A fuel preparation and deep processing technology, applied in the direction of calcium carbonate/strontium/barium, etc., can solve the problems of difficult deep processing, large lime particle size, and more fuel, etc., and achieve the effect of saving fuel
Inactive Publication Date: 2022-02-08
怀化鑫崀峰钙业有限公司
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Problems solved by technology
However, this method requires a lot of fuel, resulting in waste of fuel. In addition, the lime particle size obtained by firing is relatively large, which is difficult to carry out further processing, and forms fine lime and nano-scale calcium carbonate with increased added value.
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Embodiment 1
[0029] Such as figure 1 Shown a kind of method utilizing carbonaceous shale as fuel to prepare deeply processed lime, comprises the steps:
[0030] Step 1, obtaining carbonaceous shale;
[0031] Step 2, crushing the carbonaceous shale through a crusher to obtain carbonaceous shale powder;
[0032] Step 3, sieve the carbonaceous shale powder, the ones with smaller diameters are regarded as primary fines, and the ones with larger diameters are regarded as primary qualified materials; wherein, the diameters of primary fines are less than 0.8mm, and the diameters of primary qualified materials are The range is 0.8mm-1.5mm;
[0033] Step 4, adding the fine material to the fluidized bed after weighing once to obtain active slag;
[0034] Step 5, the active slag is ground to obtain high-grade ash;
[0035] Step 6, the primary qualified material is mixed with limestone and then added to the kiln for firing to obtain fired products; the particle size range of limestone is 0.8mm-1.5...
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Abstract
The invention discloses a method for preparing deeply processed lime by using carbonaceous shale as fuel. The method comprises the following steps of: 1, obtaining carbonaceous shale; 2, crushing the carbonaceous shale to obtain carbonaceous shale powder; 3, screening the carbonaceous shale powder; 4, weighing the primary fine material, adding the primary fine material into a fluidized bed, and firing to obtain active slag; 5, grinding the active slag to obtain high-quality ash; 6, mixing the primary qualified material with limestone, adding the mixture into a kiln, and firing to obtain a fired product; 7, screening the fired product to obtain slag and a qualified product; 8, adding the qualified product into a skin rolling machine for skin rolling; 9, grinding the secondary fine material into fine lime; and 10, using the secondary qualified material to prepare nano calcium carbonate. According to the invention, the carbon-containing shale is used as a fuel and a raw material for preparing lime, and the raw materials with different gradation are processed differently, so that the raw materials are fully utilized and saved.
Description
technical field [0001] The invention belongs to the field of lime processing, in particular to a method for preparing deep-processed lime by using carbonaceous shale as fuel. Background technique [0002] In the existing lime processing method, the limestone ingredients are usually sent directly into the kiln for firing to form calcium oxide, and then water is added to generate lime. However, this method requires a lot of fuel, resulting in waste of fuel. In addition, the lime particle size obtained by firing is relatively large, which is difficult to carry out deep processing, and forms fine lime and nano-scale calcium carbonate with increased added value. Contents of the invention [0003] In order to solve the above problems, the invention discloses a method for preparing deeply processed lime by using carbonaceous shale as fuel. The invention adopts carbonaceous shale as fuel and raw material for lime production, and processes raw materials of different grades differe...
Claims
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IPC IPC(8): C04B2/10C01F11/18
CPCC04B2/108C04B2/104C01F11/18
Inventor 林小元邓爱球
Owner 怀化鑫崀峰钙业有限公司