CN103803948A

CN103803948A - Preparation method of urban sludge added sintered bricks

Info

Publication number: CN103803948A
Application number: CN201410008410.0A
Authority: CN
Inventors: 房茂青; 房磊; 李保华
Original assignee: ZAOZHUANG MINGTONG NEW BUILDING MATERIAL Co Ltd
Current assignee: ZAOZHUANG MINGTONG NEW BUILDING MATERIAL Co Ltd
Priority date: 2014-03-21
Filing date: 2014-03-21
Publication date: 2014-05-21
Anticipated expiration: 2034-03-21
Also published as: CN103803948B

Abstract

The invention discloses a preparation method of urban sludge added sintered bricks, which comprises the following steps: 1, dumping sludge into a sludge mixing pool, adding water into the pool and uniformly stirring, and after the moisture content of the sludge is 80-90%, extracting the calorific value of the sludge in the pool and the volatile content of organic matters; 2, adding the sludge subjected to the extraction of the calorific value and the volatile content and with a moisture content of 80-90% into a brick making raw material consisting of shale and coal gangue in proportion, mixing, grinding and homogenizing the obtained product, and conveying the obtained product to an ageing bin to age; 3, adding the aged brick making material into a vacuum brick extruding machine, and carrying out extrusion molding on the material so as to obtain wet green bricks; 4, drying the wet green bricks; and 5, calcinating: conveying the dried green bricks to a calcinating kiln to calcinate for 24-28 hours at a calcination temperature of 1000-1100 DEG C, so that sintered products are obtained.

Description

A kind of preparation method who adds city sludge vitrified brick

Technical field

The present invention relates to a kind of preparation method of material of construction, relate in particular to a kind of preparation method who adds city sludge vitrified brick.

Background technology

The mud that municipal sewage plant produces is a great problem of puzzlement urban environment always, in some areas, the disposal costs of mud is also a no small number, will cause secondary pollution if dealt with improperly, find through detecting, municipal sludge has the organic matter of certain thermal value, and has the more objectionable impurities to environment.Can, by sludge resource utilization, not cause again secondary pollution, the manufacturing process of adding making brick from sludge is a kind of processing mode of comparatively giving prominence to.

In existing municipal sludge brickmaking technology, adopt the dry and roasting kiln general step of automatically controlling: first mud is made to processed, maybe the mud of degraded, anaerobic treatment is remake to processed, then be uniformly mixed, moulding clip, enters dry kiln, roasting finished product.Mud early stage in this class technique need be degraded, anaerobism, drying treatment, mud open-assembly time is longer, environment control ensures and is difficult to reach re-set target, and modernization brickkiln is all automatic continuous control, output is larger, add 40%-60% mud, first mud continues a large amount of supplies is exactly a raw material supply problem, as direct minimizing or without mud, in lasting roasting kiln, original technical parameter is set, to cause the generation of builder in batch, as adopted artificial technology to regulate, its quality product is also difficult to stable guarantee.In the composition of mud, organic volatile component is larger, adds in a large number mud and will cause finished bricks sizing unstable, compares with the common brick of firing with less interpolation mud, and its quality does not have advantage yet.

Summary of the invention

The object of this invention is to provide and a kind ofly can reduce mud impact on environment in disposal process, the technical parameter of the dry and roasting kiln of the automatic control to persistence requires less, a kind of preparation method who adds city sludge vitrified brick that the quality of the finished bricks of the lasting supply guarantee to mud and interpolation firing sludge is all greatly improved.

For achieving the above object, the technical solution used in the present invention is: a kind of preparation method who adds city sludge vitrified brick, it is characterized in that, and comprise the following steps:

The first step, pours into sludge agitation pond by mud, and the uniform stirring that adds water treats that sludge moisture content reaches 80%-90%, extracts the thermal value of mud in this pond and organic volatile quantity;

Second step, joins the mud of the water content 80-90% that extracted thermal value and volatile quantity by shale and the making coal gangue brick raw material of proportioning collocation, is uniformly mixed to grind and practices homogenizing, then be sent to the ageing of ageing storehouse, and wherein the content of mud accounts for the 1%-10% of gross weight;

The 3rd step, adds the brick producing material after ageing in vacuum extruder to, and extrusion moulding obtains wet adobe;

The 4th step, dry, send the kiln car of the good adobe of code to dry kiln, utilize roasting kiln waste heat dry 20-24 hour in the hot blast of 100-150 ℃;

The 5th step, roasting, sends dried adobe to roasting kiln, and maturing temperature is 1000-1100 ℃, within roasting time 24-28 hour, obtains sintered article.

Advantageous effect of the present invention is: owing to having used preparation method of the present invention, early stage, sludge disposal reduced drying and other treatment, impact on environment is less, oven dry and the roasting kiln of the automatic control of persistence because of what use, require stability higher to the composition of brick, enter agitated pool at mud and add while adding water to water content at 80%-90%, it is extracted to the thermal value of mud in this pond and organic volatile quantity; The thermal value of mud has been determined the addition of mud, and organic volatile quantity is determined the size of adobe size.Generally, according to mud thermal value, determine that mud adds the content of 1%-10%, less interpolation mud has higher guarantee to the quality of finished bricks.In raw material, add mud, the content of coal gangue in the alternative brick-making raw material of its thermal value, so saved starting material, has also reduced production cost, the use to mud that can be long-term has a good guarantee, thereby obtains the economic benefit of enterprise and the achievement of social environmental benefit double combination.

Accompanying drawing explanation

Fig. 1 is a kind of preparation method's schema that adds city sludge vitrified brick.

Embodiment

Below in conjunction with the drawings and specific embodiments, the invention will be further described:

The present invention as shown in Figure 1,

embodiment 1

The first step, mud is poured into sludge agitation pond (this agitated pool should be built volume according to actual mud supply), the appropriate uniform stirring that adds water, treats that sludge moisture content reaches 80%-90%, and the thermal value of extracting mud in this pond is 1000 kilocalories and organic volatile quantity 20%;

Second step, the mud of the water content 80-90% that extracted thermal value and volatile quantity is joined by other brick-making raw material such as shale, coal gangue of proportioning collocation, ratio is shale 60%, coal gangue 25%, other mixing raw material 5%, be uniformly mixed to grind and practice homogenizing, then be sent to the ageing of ageing storehouse, wherein the content of mud accounts for 10% of gross weight;

The 3rd step, determines that according to volatile quantity organic in mud 20% adobe size increases by 5%,

The brick producing material of Chen Huahou is added in vacuum extruder, and extrusion moulding obtains wet adobe;

embodiment 2

The first step, mud is poured into sludge agitation pond (this agitated pool should be built volume according to actual mud supply), the appropriate uniform stirring that adds water, treats that sludge moisture content reaches 80%-90%, and the thermal value of extracting mud in this pond is 1500 kilocalories and organic volatile quantity 15%;

Second step, the mud of the water content 80-90% that extracted thermal value and volatile quantity is joined by other brick-making raw material such as shale, coal gangue of proportioning collocation, ratio is shale 60%, coal gangue 27%, other mixing raw material 5%, be uniformly mixed to grind and practice homogenizing, then be sent to the ageing of ageing storehouse, wherein the content of mud accounts for 8% of gross weight;

The 3rd step, determines that according to volatile quantity organic in mud 15% adobe size increases by 4%,

embodiment 3

The first step, mud is poured into sludge agitation pond (this agitated pool should be built volume according to actual mud supply), the appropriate uniform stirring that adds water, treats that sludge moisture content reaches 80%-90%, and the thermal value of extracting mud in this pond is 2000 kilocalories and organic volatile quantity 15%;

Second step, the mud of the water content 80-90% that extracted thermal value and volatile quantity is joined by other brick-making raw material such as shale, coal gangue of proportioning collocation, ratio is shale 60%, coal gangue 29%, other mixing raw material 5%, be uniformly mixed to grind and practice homogenizing, then be sent to the ageing of ageing storehouse, wherein the content of mud accounts for 6% of gross weight;

The 3rd step, determines that according to volatile quantity organic in mud 20% adobe size increases by 4%,

embodiment 4

The first step, mud is poured into sludge agitation pond (this agitated pool should be built volume according to actual mud supply), the appropriate uniform stirring that adds water, treats that sludge moisture content reaches 80%-90%, and the thermal value of extracting mud in this pond is 2500 kilocalories and organic volatile quantity 10%;

Second step, the mud of the water content 80-90% that extracted thermal value and volatile quantity is joined by other brick-making raw material such as shale, coal gangue of proportioning collocation, ratio is shale 60%, coal gangue 31%, other mixing raw material 5%, be uniformly mixed to grind and practice homogenizing, then be sent to the ageing of ageing storehouse, wherein the content of mud accounts for 4% of gross weight;

The 3rd step, determines that according to volatile quantity organic in mud 10% adobe size increases by 3%,

embodiment 5

The first step, mud is poured into sludge agitation pond (this agitated pool should be built volume according to actual mud supply), the appropriate uniform stirring that adds water, treats that sludge moisture content reaches 80%-90%, and the thermal value of extracting mud in this pond is 3000 kilocalories and organic volatile quantity 10%;

Second step, the mud of the water content 80-90% that extracted thermal value and volatile quantity is joined by other brick-making raw material such as shale, coal gangue of proportioning collocation, ratio is shale 60%, coal gangue 33%, other mixing raw material 5%, be uniformly mixed to grind and practice homogenizing, then be sent to the ageing of ageing storehouse, wherein the content of mud accounts for 2% of gross weight;

In the above each example, all adopt the dry and roasting kiln of automatically controlling, stir and all adopt powerful evenly mixing equipment.In actual production process, the equal actually operating of above example is feasible.Take 4 oven dry 4 roasting kilns as example, day mud consumption 20-200 ton all can operate production in the situation that not affecting Yield and quality.

Claims

1. a lithium ion battery negative material, it is characterized in that: be prepared from by the natural graphite through the processing of physics and chemistry method and heat-treated attapulgite, the mass ratio of the natural graphite of process physics and chemistry method processing and heat-treated attapulgite is 0-0.4:1.

2. a kind of lithium ion battery negative material according to claim 1, is characterized in that: the mass ratio of the natural graphite of process physics and chemistry method processing and heat-treated attapulgite is 0.33:1.

3. the preparation method of a kind of lithium ion battery negative material according to claim 1 and 2, comprises the following steps, and it is characterized in that:

Step 1, natural graphite is carried out to physics and chemistry processing: natural graphite is disperseed to 2-10 hour by high energy ball mill, then add in 30%-50% sulphuric acid soln, at 10-50 ℃, process 8-22 hour, filter, be diluted to neutrality, drying preparation becomes the graphite composite powder that has nanoporous;

Step 2, by attapulgite 100 ℃ of-500 ℃ of heat treated 10-15 hour in air dry oven;

Step 3, stirs 10-15 hour by the natural graphite of step 1 physics and chemistry processing and step 2 through the attapulgite of heat treated, mixes, and makes lithium ion battery negative material.

4. the preparation method of a kind of lithium ion battery negative material according to claim 3, comprises the following steps, and it is characterized in that:

Step 1, disperses 60g natural graphite 2 hours by high energy ball mill, then joins in 200g 30% sulphuric acid soln, processes 20 hours at 20 ℃, filters, is diluted to neutrality, and drying preparation becomes the graphite composite powder that has nanoporous;

Step 2, by 40g attapulgite 400 ℃ of heat treated 15 hours in air dry oven;

Step 3, stirs the natural graphite of step 1 physics and chemistry processing and step 2 10 hours through the attapulgite of heat treated, mixes, and makes lithium ion battery negative material.

5. the preparation method of a kind of lithium ion battery negative material according to claim 4, comprises the following steps, and it is characterized in that:

Step 1, first disperses 80g natural graphite 4 hours by high energy ball mill, then joins in 300g 30% sulphuric acid soln, processes 10 hours at 50 ℃, filters, is diluted to neutrality, and drying preparation becomes the graphite composite powder that has nanoporous;

Step 2, by 20g attapulgite 300 ℃ of heat treated 10 hours in air dry oven;

Step 3, stirs the natural graphite of step 1 physics and chemistry processing and step 2 15 hours through the attapulgite of heat treated, mixes, and makes lithium ion battery negative material.

6. the preparation method of a kind of lithium ion battery negative material according to claim 5, comprises the following steps, and it is characterized in that:

Step 1, disperses 90g natural graphite 4 hours by high energy ball mill, then joins in 300g 30% sulphuric acid soln, processes 10 hours at 50 ℃, filters, is diluted to neutrality, and drying preparation becomes the graphite composite powder that has nanoporous;

Step 2, by 10g attapulgite 200 ℃ of heat treated 12 hours in air dry oven;

Step 3, stirs the natural graphite of step 1 physics and chemistry processing and step 2 13 hours through the attapulgite of heat treated, mixes, and makes lithium ion battery negative material.