CN1191207A

CN1191207A - Method for producing earth for works from flyash and alkali residue

Info

Publication number: CN1191207A
Application number: CN96107710A
Authority: CN
Inventors: 乔希海
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-06-03
Filing date: 1996-06-03
Publication date: 1998-08-26

Abstract

An earth for works is prepared from flyash (51-90 pts.), alkali dregs (10-49 pts.) and one or more of cement yellow soil, liquid dregs, broken stone, sand and calcium lime (0-40 pts.) through mixing, and features simple process, saving money, energy and water, and wide adaptability to different work requirements.

Description

A kind of method with flyash, alkaline residue making engineering soil using

The invention belongs to a kind of to the trade waste comprehensive utilization method.

Before the present invention realized, along with the development of energy industry, a large amount of flyash all will be discharged every year in the fuel-burning power plant of constantly building up.This trade waste not only needs large-area storage space, and has seriously polluted environment.For making full use of flyash, improve environment, people are used it as adding composition: the CN93117803 application for a patent for invention discloses a kind of industrial alkali waste slag that mainly utilizes and has mixed the method that a small amount of flyash is made building materials haydite, pottery sand.The CN93117804 application for a patent for invention then discloses a kind of method of utilizing the industrial alkali waste slag to mix a small amount of flyash or unclassified stores making engineering backfill soil.Aforesaid method uses a spot of flyash in a large amount of use industrial alkali waste slags, also can reach the effect of utilizing of trade waste.But it mainly utilizes liking the industrial alkali waste slag, and work in-process needs earlier above-mentioned alkaline residue is separated with 2-3 yew doubly, carries out batch mixes, ageing, solid-liquid separation then, obtains finished product at last.This working method complex procedures adds yew and separates a large amount of water of needs, and ageing then needs huge maturing equipment and ageing place, and solid-liquid separation need get rid of the water of above-mentioned adding, promptly wastes energy and water, loses time again.Therefore, aforesaid method has certain difficulty in force, and the tooling cost height.

The CN95106293.X application for a patent for invention discloses a kind of method of producing engineering soil from alkaline slag, and it is main raw material with the alkaline residue to the effect that, mixes flyash or the unclassified stores of 0-50%, as cement, loess etc.During enforcement, above-mentioned material stirred into paste after, after 24-48 hour seasoning, dehydration, curing, making engineering earth under normal temperature, the normal pressure.This method technology is simple, and consumption alkaline residue amount is big, but the problem that exists is to need long seasoning, dehydrating and curing, therefore need take a large amount of workyards, and be affected by the climate easily in implementing, and should not use in rainy and coastland.

The CN95108024.5 application for a patent for invention then discloses the method that a kind of desiccating method is handled soda residue construction clay.This method is earlier with after the alkaline residue drying, with other material, makes engineering earth behind the flyash blunge comprising 0-80% again.Though the use flyash that this method also can be a large amount of, but operation is complicated, dry alkaline residue needs huge drying plant and large-area workyard, and when mixing, need to add a large amount of water mixs again, this technology must consume a large amount of energy and water, also needs big facility investment simultaneously.

A common issue with that exists in the above-mentioned prior art is: because a large amount of use alkaline residues, therefore for solving the big problem of water content in the described alkaline residue, need to drop into a large amount of fund, equipment, workyard, and consume a large amount of energy and water, perhaps expend the long time.

The objective of the invention is: provide a kind of and manufacture the method for engineering earth, thereby solved the problem that exists in the above-mentioned prior art with flyash, alkaline residue.

Method of the present invention is: with 51-90 part flyash and alkaline residue 10-49 part, and selection material: cement 0-40 part or loess 0-40 part or liquid slag 0-40 part or return stone and return one or more of husky 0-45 part or unslaked lime 0-50 part, after the even matter of above mixing of materials stirring, directly use as finished product soil.

Before the above-mentioned mixing of materials, should pulverize being blocky material.During mixing, after available machine mixer stirs even matter, directly use, and make static load reach service requirements as finished product soil.

In the proportioning of above-mentioned material, whether use the selection material, proportioning on flyash and alkaline residue is decided, such as: when using 90 parts of flyash and 10 parts of alkaline residues, after processing, can reach best water content, and when using 60 parts of flyash and 30 parts of alkaline residues, then need to add 10 parts of cement or other selection material adjustment, so that water content reaches best.Simultaneously, add the static load that cement or unslaked lime can also improve finished product soil greatly.

In method of the present invention, because after the machine mixer violent stirring, moisture in the alkaline residue is separated out, and absorbed in a large number by flyash and other candidate material, finished product seasoning is in use solidified, thereby can save drying, dewater or operation such as the drying of banking up, and then can save a large amount of funds, the energy, water, workyard and time in force alkaline residue, cut down finished cost significantly, and can not be subjected to the influence in weather and place in the processing.The finished product soil that adopts the present invention to process can be directly used in the backfill or the building industry soil of bottom land, and can satisfy the needs of various industrial lands, thereby reaches the comprehensive utilization trade waste, the purpose of curbing environmental pollution.

The present invention includes but be not limited to following examples: embodiment 1:

With 65 parts in flyash, 30 parts of alkaline residues, 5 parts of unslaked limes, material total amount 2T, after the even matter of machine mixer mixing stirring, directly made ground compacting, static load is 20T/M.Embodiment 2:

With 60 parts in flyash, 30 parts of alkaline residues, 10 parts of loess, material total amount 2T, after the even matter of machine mixer mixing stirring, directly made ground compacting, static load is 12T/M.Embodiment 3:

With 70 parts in flyash, 20 parts of alkaline residues, 10 parts of unslaked limes, material total amount 2T, after the even matter of machine mixer mixing stirring, directly made ground compacting, static load is 25T/M.Embodiment 4:

With 55 parts in flyash, 40 parts of alkaline residues, 5 parts of unslaked limes, material total amount 2T, after the even matter of machine mixer mixing stirring, directly made ground compacting, static load is 15T/M.Embodiment 5:

With 55 parts in flyash, 40 parts of alkaline residues, 5 parts of cement, material total amount 2T, after the even matter of machine mixer mixing stirring, directly made ground compacting, static load is 30T/M.

Claims

1. method with flyash, alkaline residue making engineering soil using, it is characterized in that with 51-90 part flyash and alkaline residue 10-49 part, and selection material: cement 0-40 part or loess 0-40 part or liquid slag 0-40 part or return stone and return one or more of husky 0-45 part or unslaked lime 0-50 part, after the even matter of above mixing of materials stirring, directly use as engineering soil.

2. method according to claim 1 is characterized in that before the above-mentioned mixing of materials, blocky material should be pulverized.