A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Utilization method of kiln tail dedusting ash of lime rotary kiln
The invention relates to a utilization method of fly ash at the tail of a lime rotary kiln, belongs to the technical field of energy conservation, environmental protection and solid waste utilization, and solves the technical problem of solid waste reutilization of fly ash at the tail of the lime rotary kiln and the technical problem of steam-curing cracks of autoclaved aerated concrete plates. The method sequentially comprises the following steps of raw material treatment, burdening and pouring, standing, drill rod pulling, overturning demolding, cutting and grouping, autoclaved curing, plate breaking and finished product stacking. According to the invention, on one hand, the fly ash with the calcium content of 20-40% is used for replacing high-calcium quicklime to prepare the aerated concrete block/plate, so that the reutilization of solid waste is realized; and on the other hand, by utilizing the characteristic that the fly ash is digested under high-temperature and high-pressure conditions, the problem of steam-curing cracks caused by mismatching of expansion coefficients of the aerated concrete plate blank and the internal steel bars is solved, and the finished product quality of the aerated concrete plate is improved.
本发明涉及一种石灰回转窑窑尾除尘灰的利用方法，属于节能环保、固废利用技术领域，解决石灰回转窑窑尾除尘灰固废再利用的技术问题，同时解决蒸压加气砼板材蒸养裂纹的技术问题，依次包括以下步骤：原料处理、配料及浇注、静养、拔钎、翻转脱模、切割和编组、蒸压养护、掰板及成品码垛。本发明一方面利用除尘灰的钙含量（20%‑40%）替代高钙生石灰制备加气砼砌块/板，实现了固废的再利用；另一方面，利用除尘灰在高温高压条件下消解的特性，解决了加气砼板材坯体与内部钢筋膨胀系数不匹配造成的蒸养裂纹的顽疾，提高了加气砼板材的成品质量。
Utilization method of kiln tail dedusting ash of lime rotary kiln
The invention relates to a utilization method of fly ash at the tail of a lime rotary kiln, belongs to the technical field of energy conservation, environmental protection and solid waste utilization, and solves the technical problem of solid waste reutilization of fly ash at the tail of the lime rotary kiln and the technical problem of steam-curing cracks of autoclaved aerated concrete plates. The method sequentially comprises the following steps of raw material treatment, burdening and pouring, standing, drill rod pulling, overturning demolding, cutting and grouping, autoclaved curing, plate breaking and finished product stacking. According to the invention, on one hand, the fly ash with the calcium content of 20-40% is used for replacing high-calcium quicklime to prepare the aerated concrete block/plate, so that the reutilization of solid waste is realized; and on the other hand, by utilizing the characteristic that the fly ash is digested under high-temperature and high-pressure conditions, the problem of steam-curing cracks caused by mismatching of expansion coefficients of the aerated concrete plate blank and the internal steel bars is solved, and the finished product quality of the aerated concrete plate is improved.
本发明涉及一种石灰回转窑窑尾除尘灰的利用方法，属于节能环保、固废利用技术领域，解决石灰回转窑窑尾除尘灰固废再利用的技术问题，同时解决蒸压加气砼板材蒸养裂纹的技术问题，依次包括以下步骤：原料处理、配料及浇注、静养、拔钎、翻转脱模、切割和编组、蒸压养护、掰板及成品码垛。本发明一方面利用除尘灰的钙含量（20%‑40%）替代高钙生石灰制备加气砼砌块/板，实现了固废的再利用；另一方面，利用除尘灰在高温高压条件下消解的特性，解决了加气砼板材坯体与内部钢筋膨胀系数不匹配造成的蒸养裂纹的顽疾，提高了加气砼板材的成品质量。
Utilization method of kiln tail dedusting ash of lime rotary kiln
一种石灰回转窑窑尾除尘灰的利用方法
ZHANG MEIXIA (author) / HU RONGJIAN (author) / YANG CHAOGANG (author) / ZHANG HUIYUE (author) / FAN HUIJUAN (author) / LIU PENG (author) / WANG ZHENG (author) / CAO PENGFEI (author) / QIAO BO (author)
2023-04-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
B28C
Tonaufbereitung
,
PREPARING CLAY
Kiln tail flue gas secondary utilization device of lime rotary kiln calcination system
| European Patent Office | 2023
| Engineering Index Backfile | 1951