Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing ultralight ceramsites from clay iron-containing tailings
The invention discloses a method for preparing ultralight ceramsites from clay iron-containing tailings. The ultralight ceramsites are prepared from the following raw materials in percentage by weight according to dry basis weight: 40-48 percent of clay iron-containing tailings, 40-48 percent of coal series kaolinite or coal gangue and 8-15 percent of dewatered sludge; the method comprises the following preparation processes: mixing materials, pelletizing, drying, preheating, calcining and cooling; under an optimum formula and process conditions that the preheating temperature is 500-600 DEG C, calcination temperature is 1250-1350 DEG C, and the heating rate is 10-15 DEG C/min, the all-solid waste ultralight ceramsites with the bulk density of 390 kg/m<3>, cylinder compressive strength of 1.2 MPa and the water absorption of 3.8% can be prepared through firing, and meet requirements of GB/T17431.1-2010, a novel approach is developed for abundant utilization of tailings, coal gangue and dewatered sludge and obvious economic benefits, environmental benefits and social benefits are realized.
Method for preparing ultralight ceramsites from clay iron-containing tailings
The invention discloses a method for preparing ultralight ceramsites from clay iron-containing tailings. The ultralight ceramsites are prepared from the following raw materials in percentage by weight according to dry basis weight: 40-48 percent of clay iron-containing tailings, 40-48 percent of coal series kaolinite or coal gangue and 8-15 percent of dewatered sludge; the method comprises the following preparation processes: mixing materials, pelletizing, drying, preheating, calcining and cooling; under an optimum formula and process conditions that the preheating temperature is 500-600 DEG C, calcination temperature is 1250-1350 DEG C, and the heating rate is 10-15 DEG C/min, the all-solid waste ultralight ceramsites with the bulk density of 390 kg/m<3>, cylinder compressive strength of 1.2 MPa and the water absorption of 3.8% can be prepared through firing, and meet requirements of GB/T17431.1-2010, a novel approach is developed for abundant utilization of tailings, coal gangue and dewatered sludge and obvious economic benefits, environmental benefits and social benefits are realized.
Method for preparing ultralight ceramsites from clay iron-containing tailings
LUO SHULIANG (Autor:in) / NA QIONG (Autor:in) / PAN XUFANG (Autor:in) / SUN LEI (Autor:in) / CHEN HONGGUI (Autor:in) / GUO QING (Autor:in) / WANG FAN (Autor:in) / ZHU TONG (Autor:in) / XU QINGRONG (Autor:in)
02.09.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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