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A platform for research: civil engineering, architecture and urbanism
Method for harmlessly treating fly ash through ultrahigh-pressure pressing process
The invention provides a method for harmlessly treating fly ash by an ultrahigh-pressure pressing process. The method comprises the following steps of: S1, mixing fly ash to be treated with cement in a certain proportion, conveying the mixture to a mixing mill, performing stirring, spraying a chelating agent, performing mixing and stirring, and detecting and adjusting the proportion and the addition amount of the chelating agent in real time; S2, discharging a mixed material onto a conveyor, conveying the mixed material into a feeder above a hydraulic machine, injecting a stabilizer, and performing stirring at a certain speed; S3, quantitatively injecting the material stirred in the step S2 into a mold of the hydraulic machine, carrying out pressure pressing, discharging generated percolate, and conveying a formed material to a maintenance conveyor; S4, curing the formed material for a period of time, carrying out stack-curing oxidation and test analysis treatment, crushing the unqualified material, and carrying out treatment again until the unqualified material is qualified; and S5, obtaining an aggregate. According to the method, after the ultrahigh-pressure pressing mode is adopted, the density of the material can be greatly increased; and the material is doped into concrete after being cured, so that the possibility of leaching of toxic substances is greatly reduced.
本发明提供了超高压压制工艺无害化处理飞灰的方法，S1：待处理的飞灰和一定比例的水泥混合，输送至混炼机，搅拌，喷入螯合剂，混合搅拌且实时检测调整螯合剂的配比和添加量；S2：混炼后的物料排出在输送机上，输送至液压机上方的给料机内，注入稳定剂，进行一定速率的搅拌；S3：将S2搅拌后物料定量注入液压机的模具内，进行压力压制，产生的渗滤液排出，成型物料输送至养护输送机；S4：对成型物料进行养护一段时间，堆养氧化及化验分析处理，不合格的打碎，重新处理，直至合格；S5：获得骨料。该方法，通过超高压压制方式后，能够大大的增加了物料的密度，且固化完成后掺入混凝土中，有毒物质浸出的可能性大大降低。
Method for harmlessly treating fly ash through ultrahigh-pressure pressing process
The invention provides a method for harmlessly treating fly ash by an ultrahigh-pressure pressing process. The method comprises the following steps of: S1, mixing fly ash to be treated with cement in a certain proportion, conveying the mixture to a mixing mill, performing stirring, spraying a chelating agent, performing mixing and stirring, and detecting and adjusting the proportion and the addition amount of the chelating agent in real time; S2, discharging a mixed material onto a conveyor, conveying the mixed material into a feeder above a hydraulic machine, injecting a stabilizer, and performing stirring at a certain speed; S3, quantitatively injecting the material stirred in the step S2 into a mold of the hydraulic machine, carrying out pressure pressing, discharging generated percolate, and conveying a formed material to a maintenance conveyor; S4, curing the formed material for a period of time, carrying out stack-curing oxidation and test analysis treatment, crushing the unqualified material, and carrying out treatment again until the unqualified material is qualified; and S5, obtaining an aggregate. According to the method, after the ultrahigh-pressure pressing mode is adopted, the density of the material can be greatly increased; and the material is doped into concrete after being cured, so that the possibility of leaching of toxic substances is greatly reduced.
本发明提供了超高压压制工艺无害化处理飞灰的方法，S1：待处理的飞灰和一定比例的水泥混合，输送至混炼机，搅拌，喷入螯合剂，混合搅拌且实时检测调整螯合剂的配比和添加量；S2：混炼后的物料排出在输送机上，输送至液压机上方的给料机内，注入稳定剂，进行一定速率的搅拌；S3：将S2搅拌后物料定量注入液压机的模具内，进行压力压制，产生的渗滤液排出，成型物料输送至养护输送机；S4：对成型物料进行养护一段时间，堆养氧化及化验分析处理，不合格的打碎，重新处理，直至合格；S5：获得骨料。该方法，通过超高压压制方式后，能够大大的增加了物料的密度，且固化完成后掺入混凝土中，有毒物质浸出的可能性大大降低。
Method for harmlessly treating fly ash through ultrahigh-pressure pressing process
一种超高压压制工艺无害化处理飞灰的方法
LIU QIONG (author) / CHENG SHENGBO (author) / TANG HUILIN (author) / LI JIAWANG (author) / ZHAO HAIYE (author) / SUN CHANG (author)
2022-02-08
Patent
Electronic Resource
Chinese
IPC:
B09B
DISPOSAL OF SOLID WASTE
,
Beseitigung von festem Abfall
/
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
/
C04B
Kalk
,
LIME
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