Unlock instant, AI-driven research and patent intelligence for your innovation.

Circulating fluidized bed ash shale ceramsite and preparation method thereof

A circulating fluidized bed and ash shale technology, which is applied in the field of ceramsite, can solve the problems that cement plants cannot be used, red ash can only be stored, and water demand is large, and achieves energy saving, short preparation period, and waste residue utilization rate. high effect

Pending Publication Date: 2019-04-16
GUANGZHOU UNIVERSITY
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CFB ash is the extra-grade fly ash of power plants, which is red in color. This kind of ash requires a lot of water, has poor activity and contains a certain amount of free calcium. It cannot be used in cement plants.
A large amount of red ash can only be piled up, and at most several million tons are piled up near the factory area, causing serious pollution

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Circulating fluidized bed ash shale ceramsite and preparation method thereof
  • Circulating fluidized bed ash shale ceramsite and preparation method thereof
  • Circulating fluidized bed ash shale ceramsite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] The preparation method of the circulating fluidized bed lime shale ceramsite of embodiment 1 is as follows:

[0083] 1. Preparation of raw materials: ① Circulating fluidized bed ash (CFB): Take CFB ash, remove impurities, and crush the agglomerates into powder (with a particle size below 1mm); ② Slag: Take slag and remove impurities, crush it into powder shape (particle size below 1mm); ③shale: take sandy shale (moisture content about 10%), and crush it into powder (particle size below 0.5mm); ④foaming agent: muddy iron mud ( Fe 2 o 3 ).

[0084] 2. Ingredients: The mass ratio of each raw material is: CFB ash 40%, sandy shale 25%, slag 25%, foaming agent 10%.

[0085] Mix slag and CFB ash in proportion to make mixed ash, add a small amount of water to stir and mix (reduce field dust), the moisture content of the mixed ash is 8% to 12%, the calorific value of the mixed ash reaches more than 400Kcal / Kg, store it for later use. Add water to the mixed ash, shale and foa...

Embodiment 2

[0090] The mass ratio of the raw materials of the ceramsite in Example 2 is: CFB ash 45%, sandy shale 20%, slag 20% ​​foaming agent 15%. All the other preparation methods are the same as in Example 1.

Embodiment 3

[0092] The mass ratio of the raw materials of the ceramsite in Example 3 is: CFB ash 50%, sandy shale 25%, slag 15%, foaming agent 10%. All the other preparation methods are the same as in Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
heating valueaaaaaaaaaa
heating valueaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses circulating fluidized bed ash shale ceramsite and a preparation method thereof. The circulating fluidized bed ash shale ceramsite is prepared from, by mass, 40-60% of circulating fluidized bed ash, 15-30% of slag, 15-25% of shale, 0-15% of a foaming agent. The invention further discloses the preparation method of the circulating fluidized bed ash shale ceramsite. The methodcomprises the preparation method of foaming circulating fluidized bed ash shale ceramsite and sintered circulating fluidized bed ash shale ceramsite. The circulating fluidized bed ash shale ceramsiteis an artificial lightweight aggregate and comprises foaming ceramsite and sintered ceramsite, and the ceramsite performance is high. The preparation method of the circulating fluidized bed ash shaleceramsite has the advantages of being high in waste residue utilization rate and wide in raw material source, and the preparation process is relatively simple, the preparation cycle is short, and energy conservation is saved. The prepared ceramsite products can be used in lightweight aggregate concrete, building products, planting, filtration, thermal insulation and other fields.

Description

technical field [0001] The invention relates to a ceramsite, in particular to a circulating fluidized bed lime shale ceramsite and a preparation method thereof. Background technique [0002] Ceramsite is a kind of artificial inorganic light aggregate, which is mainly used in thermal insulation, heat insulation, light wall, light aggregate concrete, light concrete for structure, etc. in construction engineering, and can also be used for environmental protection filtration, agricultural planting and construction Decoration and other fields. At present, the preparation of ceramsite is mainly made of clay, shale, mine stripping, river surge, domestic sludge and industrial solid waste, etc., and is prepared by adding auxiliary additives such as expansion materials and ingredients. At present, various industrial solid wastes are used as basic raw materials to manufacture ceramsite, which has become a development hotspot. [0003] Circulating fluidized bed ash (CFB ash) mainly co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B18/02C04B38/10
CPCC04B18/027C04B35/622C04B35/62204C04B38/10C04B2235/349C04B2235/5427C04B2235/5436C04B2235/606C04B2235/656C04B2235/6567C04B2235/94C04B2235/95
Inventor 甘伟
Owner GUANGZHOU UNIVERSITY