WO2013120241A1 - 秸秆灰生产低温水泥熟料的方法 - Google Patents

秸秆灰生产低温水泥熟料的方法 Download PDF

Info

Publication number
WO2013120241A1
WO2013120241A1 PCT/CN2012/001470 CN2012001470W WO2013120241A1 WO 2013120241 A1 WO2013120241 A1 WO 2013120241A1 CN 2012001470 W CN2012001470 W CN 2012001470W WO 2013120241 A1 WO2013120241 A1 WO 2013120241A1
Authority
WO
WIPO (PCT)
Prior art keywords
cement
low
straw ash
cement clinker
temperature
Prior art date
Application number
PCT/CN2012/001470
Other languages
English (en)
French (fr)
Inventor
谭纪林
Original Assignee
滨海仁舟水泥有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 滨海仁舟水泥有限公司 filed Critical 滨海仁舟水泥有限公司
Publication of WO2013120241A1 publication Critical patent/WO2013120241A1/zh

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00Hydraulic cements
    • C04B7/14Cements containing slag
    • C04B7/147Metallurgical slag
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00Hydraulic cements
    • C04B7/24Cements from oil shales, residues or waste other than slag
    • C04B7/28Cements from oil shales, residues or waste other than slag from combustion residues, e.g. ashes or slags from waste incineration
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/10Production of cement, e.g. improving or optimising the production methods; Cement grinding

Definitions

  • the invention relates to a method for producing a novel low-temperature cement clinker by using straw ash and steel slag and aluminum slag, in particular, the current power plant utilizes various plant stalks, such as rice straw, wheat straw, rice husk, corn stalk, soybean stalk, The dry and wet waste discharged from the wood bark and other burning and power generation is called straw ash.
  • the advanced technology is used to produce a new type of low-temperature cement clinker from the straw ash, and a harmless treatment method is adopted. Cement field.
  • the dry and wet waste slag contains about 80% of SiO 2 and a small amount of other oxides. At about 25%, the straw ash self-combustion reaction is incomplete, and the straw ash amorphous Si0 2 is converted into crystalline Si0 2 , which affects the unstable quality of the straw ash. If it is mixed into cement, the cement water demand will be exceeded. High, the application is limited, the cement water demand is too high, it will cause the slump of the slurry to work normally, and the straw ash is moist and the amount of blending is small, which also brings difficulties to the cement production process, etc. The development and utilization of straw ash is very difficult. The unutilized straw ash can only be piled up and landfilled.
  • the object of the present invention is to solve the problem that the straw ash causes serious pollution to air and water sources, and provides an advanced and reasonable process, high energy consumption, high benefit, low investment, no secondary pollution, and is beneficial to the large-scale use of straw ash.
  • the straw ash of the invention produces low-temperature cement clinker, which is prepared by using dry and wet straw ash as main raw material and steel slag and aluminum slag as auxiliary materials through special processes, and the production method comprises the following steps -
  • a method for producing low-temperature cement clinker from straw ash comprising the steps of:
  • Raw materials are straw ash, steel slag and aluminum slag;
  • the straw ash is 60 ⁇ 70 parts by weight
  • the steel slag is 25 ⁇ 30 parts by weight
  • the aluminum slag is initially mixed in a proportion of 5 ⁇ 10 parts by weight, in the ball forming machine Add appropriate amount of water and mix well and mix well to make a ball output with a diameter of 5 ⁇ 10mm, and get the material ball for use;
  • the cement of low-temperature cement clinker produced by the above method can replace the cement of Portland cement clinker with other kinds of cement to improve the quality of cement of other varieties.
  • the cement of the low-temperature cement clinker mainly based on straw ash and supplemented by steel slag and aluminum slag has high cement strength, good compatibility, good wear resistance, low hydration heat, micro-expansion and resistance Various characteristics such as freezing and corrosion resistance. Its performance is comparable to that of Portland cement clinker.
  • the production method also has the advantages of advanced and reasonable technology, low energy consumption, high efficiency, low investment, no secondary pollution, and environmental protection. Compared with the existing method for producing ordinary cement, the investment is 80%, the cement cost is reduced by 60%, the energy consumption is reduced by 80%, and the C0 2 emission is reduced by 80%. Therefore, the low-temperature cement clinker produced by the method of the invention is used in cement production.
  • Fig. 1 is a structural picture of a cement stone hydration of a low temperature cement clinker of the present invention at 28 days;
  • Fig. 2 is a structural picture of a conventional cement stone at 28 days of hydration.
  • the straw ash of the invention produces low-temperature cement clinker, which is prepared by using dry and wet straw ash as main raw material and steel slag and aluminum slag as auxiliary materials through special processes, and the production method comprises the following steps -
  • the raw materials are straw ash, steel slag and aluminum slag; the straw ash is fueled by various plant stalks such as rice straw, wheat straw, rice husk, corn stalk, soybean stalk, wood shoot branch, bark, etc.
  • the dry and wet waste discharged after combustion and power generation is called straw ash.
  • the steel slag used is the waste residue discharged from the iron and steel plant, and the sludge discharged after the iron is controlled by water washing is called steel slag, which contains 50% of CaO and about 8% of water; Aluminium slag is a waste residue from the production of aluminum sulfate produced by a chemical plant. It contains A 2 0 3 at around 15%, water content at 40%, and a pH of less than 6.
  • the straw ash is initially mixed with 60 parts by weight, steel slag is 25 parts by weight, and aluminum slag is 5 parts by weight;
  • the straw ash is 60 parts by weight
  • the steel slag is 30 parts by weight
  • the aluminum slag is initially mixed at a ratio of 10 parts by weight
  • the straw ash is 65 parts by weight
  • the steel slag is 30 parts by weight
  • the aluminum slag is initially mixed at a ratio of 5 parts by weight
  • the straw ash is 65 parts by weight
  • the steel slag is 30 parts by weight
  • the aluminum slag is initially mixed at a ratio of 10 parts by weight
  • the straw ash is 65 parts by weight, the steel slag is 25 parts by weight, and the aluminum slag is initially mixed at a ratio of 10 parts by weight;
  • the straw ash is 65 parts by weight, the steel slag is 25 parts by weight, and the aluminum slag is initially mixed at a ratio of 5 parts by weight;
  • the straw ash is initially mixed in a proportion of 70 parts by weight, the steel slag is 25 parts by weight, and the aluminum slag is 5 parts by weight;
  • the straw ash is 70 parts by weight, the steel slag is 25 parts by weight, and the aluminum slag is initially mixed at a ratio of 10 parts by weight;
  • the straw ash is 70 parts by weight, the steel slag is 30 parts by weight, and the aluminum slag is initially mixed at a ratio of 5 parts by weight; Or the straw ash is 70 parts by weight, the steel slag is 30 parts by weight, and the aluminum slag is initially mixed at a ratio of 10 parts by weight;
  • the straw ash is 60 ⁇ 70 parts by weight
  • the steel slag is 25 ⁇ 30 parts by weight
  • the aluminum slag is initially mixed in a ratio of 5-10 parts by weight, and then the appropriate amount of water is added to the ball machine to mix and stir. After uniform production, the output of the material ball with a diameter of 5 ⁇ 10mm is obtained, and the material ball is used for standby;
  • the cement with low-temperature cement clinker of straw ash of the invention has the characteristics of high cement strength, good compatibility, good wear resistance, low hydration heat, micro-expansion, anti-freezing and corrosion resistance. Its performance is comparable to cement of Portland cement clinker.
  • the test results of its sample properties and mixed cement properties are shown in Table 1. The performance of the mixed cement far exceeds the quality before mixing.
  • the cement of the low-temperature cement clinker produced by the invention can replace the cement of the Portland cement clinker with the cement of other varieties and can obviously improve the quality of the cement of other varieties.
  • the cement of the low-temperature cement clinker produced by the invention in the ordinary cement incorporation portion can make the performance of the ordinary cement after mixing far exceed the quality before the uncomfortable, and the test results of the sample performance are shown in Table 2.
  • the cement of low-temperature cement clinker produced by the invention in the composite cement can make the performance of the composite cement far exceed the quality before the incorporation, and the test results of the sample performance are shown in Table 3.
  • a part of the cement of the low-temperature cement clinker produced by the invention can make the performance of the fly ash cement far exceed the quality before the incorporation, and the test results of the sample performance are shown in Table 5.
  • the low-temperature cement clinker produced by the method of the invention can replace the cement of the Portland cement clinker, and can also be mixed with other varieties of cement to improve the quality of other varieties of cement.
  • the ordinary cement is taken as an example for further comparison and analysis as follows: The chemical composition and ordinary cement content are shown in Table 6.
  • the cement stone of low-temperature cement clinker has a dense and uniform structure at 28 days of hydration, while the structure of ordinary cement stone is hydrated at 28 days, which is porous and inhomogeneous, and can be clearly seen. Holes, as shown in Figure 2, these large holes are the weakest link of cement stone, and low-temperature cement clinker can significantly improve the pore structure of cement. This performance is mainly based on straw ash and steel slag and aluminum slag.
  • the glass structure of the internal structure of the low-temperature cement clinker becomes loose, promotes the physical and chemical changes between the raw materials, the raw material of the raw material becomes mature, the activation ability increases, and the low-temperature cement is cooked.
  • a large number of voids of nanoparticles are generated in the material, and the nanovoid structure enhances the chemical activation ability, thereby being agglomerated by the amorphous SiO 2 , CaO, and A1 2 3 of the nanoparticles, and becomes a loose nanometer structure. Micropores, therefore, have a very good effect of improving the strength of cement stone and concrete.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

本发明的秸秆灰生产低温水泥熟料的方法,主要包括备料、配料与成球、蒸养和低温煅烧、及粉磨等步骤。能将以干湿秸秆灰为主要原材料,以钢渣和铝渣为辅助材料生产成可与硅酸盐水泥熟料的水泥相媲美的低温水泥熟料的水泥,具有水泥强度高,砼相容性好,耐磨性能好,水化热低、微膨胀、抗冻、耐腐蚀等多种特性。能直接用于大坝、水下、道路、桥梁、民用等建筑工程建设。其生产方法还具有工艺简单合理、能耗低、效益高、投资省、无二次污染、有利于环境保护等优点。与现有方法生产普通水泥相比,投资省80%,水泥成本降低60%,降低能耗80%,减少CO2排放量80%,能大量地消化了秸秆灰和其它工业废渣,减少了环境的污染,是一种有利于保护环境的变废为宝的好方法。

Description

秸秆灰生产低温水泥熟料的方法
技术领域
本发明是利用秸秆灰与钢渣和铝渣生产一种新型低温水泥熟料的方法, 特别是对 目前发电厂利用各种植物秆子, 如稻秆、 麦秆、 稻壳、 玉米秆、 大豆秆、 木梢树皮等 燃烧发电后排出的干湿废渣称秸秆灰, 采用先进的技术工艺将秸秆灰生产一种新型低 温水泥熟料, 而进行的一种无害化处理的方法, 属于绿色环保或水泥领域。
背景技术
从国内外情况看, 早先在 70年代工业发达的国家开始对秸秆灰的开发利用是美 国, 随后有日本、 澳大利亚、 新西兰、 印度、 泰国等研究了秸秆灰并用于混合水泥和 砼掺合料的研究有过报道, 利用量在 60%左右。 目前我国对秸秆灰开发利用于建材产 品中的研宄报道更少, 有报道用于生产水泥的掺量也很少, 只有 3-5%左右, 但秸秆灰 存在吸水量大的技术问题, 因秸秆灰本身含有大量的无定形 Si02, 如果秸秆灰自身煅 烧反应不完全, 就会大量转变为结晶 Si02, 因此它就影响了秸秆灰的质量, 如用于水 泥中,会造成水泥用水量过高, 应用就受到一定的限制。特别用该水泥制作商品砼时, 需水量偏高, 就会影响砼浆体的正常坍落度的工作, 为此在水泥中大量使用秸秆灰难 以做到, 这是难以大规模利用的主要原因之一。 目前, 我国每年秸秆灰排放量在 8000 万吨左右, 利用率不到 10%, 只能利用大量农田堆放和填埋, 严重污染了环境。
随着我国经济的迅猛发展, 大量的农村人口向城市集中, 农村人口就大量减少, 原有农村人口都利用各种植物秸秆, 如稻秆、 麦秆、 大豆秆、 玉米秆、 稻壳、 木梢树 皮等来烧火做饭, 但现在农村生活水平提高了, 做饭都是用煤气、 液化气, 并把原来 的各种植物秆子都放弃在田野里或点火焚烧掉,这样做严重污染了大气环境和水资源, 为止我们国家出台了各项鼓励政策, 保护资源、 节约能源、 保护环境、 资源综合再利 用。 目前我国有许多发电厂利用各种植物秸秆来燃烧发电后, 排出的干湿废渣, 称之 秸秆灰,所排出的秸秆灰含有 80%左右的 Si02和少量部分其它氧化物,潮灰含水量在 25%左右, 秸秆灰自身燃烧反应不完全, 就会将秸秆灰无定形 Si02, 大量转变成结晶 Si02, 从而影响了秸秆灰质量不稳定, 如掺入水泥中会造成水泥需水量过高, 应用就 受到限制, 水泥需水量过高, 就会造成砼浆体的坍落度正常工作, 以及秸秆灰又潮湿 和掺入量少,也给水泥生产工艺带来无法实施等困难,使秸秆灰的开发利用十分困难。 未被利用的秸秆灰只能堆放填埋, 遇雨天淋后的废水、 黑水留入河床, 严重污染了水 资源, 晴天时的干灰遇风一吹满天灰尘乌黑, 严重污染了大气环境, 所以也是使用秸 秆作燃料的发电厂的主害之一。
发明内容
本发明的目的是针对上述秸秆灰对空气和水源会造成严重污染的问题, 为大量使 用秸秆灰而提供一种工艺先进合理、 能耗低、 效益高、 投资省、 无二次污染、 有利于 环境保护的秸秆灰生产低温水泥熟料的方法。
本发明的秸秆灰生产低温水泥熟料, 是以干湿秸秆灰为主要原材料, 以钢渣和铝 渣为辅助材料经特别工艺制备而成, 其生产方法包括如下步骤-
1、 一种秸秆灰生产低温水泥熟料的方法, 其特征在于包括如下步骤:
1 )备料: 原材料为秸秆灰、 钢渣和铝渣;
2)配料与成球; 将秸秆灰按重量份为 60〜70份、 钢渣按重量份为 25〜30份、 铝渣按重量份为 5〜10份的比例初步混合后, 在成球机中加入适量水充分混合并搅 拌均匀后制成直径为 5〜10mm的料球输出, 得物料球备用;
3) 蒸养和低温煅烧: 将物料球匀速送入供干旋转窑中, 经 100°C蒸养和 400°C煅 烧共 40分钟后出窑, 即得低温水泥熟料;
4)粉磨: 将低温水泥熟料投入粉磨机中, 加入适量石膏磨细, 即得秸秆灰的低温 水泥熟料的水泥。
上述方法生产的低温水泥熟料的水泥可替代硅酸盐水泥熟料的水泥与其它品种水 泥混合而提高其它品种水泥的质量。
本发明的以秸秆灰为主、 以钢渣和铝渣为辅生产的低温水泥熟料的水泥, 具有 水泥强度高, 砼相容性好, 耐磨性能好, 水化热低、 微膨胀、 抗冻、 耐腐蚀等多种 特性。其性能可与硅酸盐水泥熟料的水泥相媲美。 其生产方法还具有工艺先进合理、 能耗低、 效益高、 投资省、 无二次污染、 有利于环境保护等优点。 与现有方法生产 普通水泥相比, 投资省 80%, 水泥成本降低 60%, 降低能耗 80%, 减少 C02排放量 80%, 所以用本发明方法生产的低温水泥熟料在水泥生产中的应用前景十分看好的, 又大量地消化了秸秆灰和其它工业废渣, 减少了环境的污染, 又是更加符合国家产 业政策工业废渣资源化循环再利用和有利于保护环境政策的变废为宝的好方法。 附图说明 图 1是本发明的低温水泥熟料的水泥石水化 28天时的结构图片; 图 2是普通水泥石水化 28天时的结构图片。
具体实施方式
本发明的秸秆灰生产低温水泥熟料, 是以干湿秸秆灰为主要原材料, 以钢渣和铝 渣为辅助材料经特别工艺制备而成, 其生产方法包括如下步骤-
1 )备料: 原材料为秸秆灰、 钢渣和铝渣; 所述秸秆灰为发电厂用稻秆、 麦秆、 稻壳、 玉米秆、 大豆秆、 木梢树枝、 树皮等各种植物秆子为燃料燃烧发电后排出的 干湿废渣称为秸秆灰, 所用的钢渣是钢铁厂排出的废渣, 再经水洗磁选控制铁后排 出的泥渣称钢渣,其中含 CaO 50%, 水分在 8%左右; 铝渣是化工厂生产硫酸铝排出 的废渣, 含有 A203在 15%左右, 含水量在 40%左右, PH值小于 6。
2)配料与成球;
将秸秆灰按重量份为 60份、 钢渣按重量份为 25份、 铝渣按重量份为 5份的比 例初步混合;
或将秸秆灰按重量份为 60份、钢渣按重量份为 30份、铝渣按重量份为 10份的 比例初步混合;
或将秸秆灰按重量份为 65份、 钢渣按重量份为 30份、 铝渣按重量份为 5份的 比例初步混合;
或将秸秆灰按重量份为 65份、钢渣按重量份为 30份、铝渣按重量份为 10份的 比例初步混合;
或将秸秆灰按重量份为 65份、钢渣按重量份为 25份、铝渣按重量份为 10份的 比例初步混合;
或将秸秆灰按重量份为 65份、 钢渣按重量份为 25份、 铝渣按重量份为 5份的 比例初步混合;
或将秸秆灰按重量份为 70份、 钢渣按重量份为 25份、 铝渣按重量份为 5份的 比例初步混合;
或将秸秆灰按重量份为 70份、钢渣按重量份为 25份、铝渣按重量份为 10份的 比例初步混合;
或将秸秆灰按重量份为 70份、 钢渣按重量份为 30份、 铝渣按重量份为 5份的 比例初步混合; 或将秸秆灰按重量份为 70份、 钢渣按重量份为 30份、 铝渣按重量份为 10份的 比例初步混合;
即将秸秆灰按重量份为 60〜70份、 钢渣按重量份为 25〜30份、 铝渣按重量份 为 5~10份的比例初步混合后, 在成球机中加入适量水充分混合并搅拌均匀后制成 直径为 5〜10mm的料球输出, 得物料球备用;
3) 蒸养和低温煅烧: 将物料球匀速送入烘干旋转窑中, 经 10CTC蒸养和 400°C煅 烧共 40分钟后出窑, 即得低温水泥熟料;
4)粉磨: 将低温水泥熟料投入粉磨机中, 加入适量石膏磨细, 即得秸秆灰的低温 水泥熟料的水泥。
本发明的以秸秆灰的低温水泥熟料的水泥, 具有水泥强度高, 砼相容性好, 耐磨 性能好, 水化热低、 微膨胀、 抗冻、 耐腐蚀等多种特性。 其性能可与硅酸盐水泥熟料 的水泥相媲美, 其样品性能及其混合水泥性能测试结果如表 1所示。 其混合后的水泥 性能远超混合前的质量。
表 1、 低温水泥熟料的水泥与硅酸盐水泥熟料水泥及其混合水泥的性能测试结果
Figure imgf000005_0001
用本发明生产的低温水泥熟料的水泥可替代硅酸盐水泥熟料的水泥与其它品种 水泥混合而能明显提高其它品种水泥的质量。
如在普通水泥掺入部分的本发明生产的低温水泥熟料的水泥, 可使混合后的普通 水泥性能远超惨入前的质量, 其样品性能测试结果如表 2所示。
表 2、 低温水泥熟料的水泥与普通水泥及其混合水泥的性能测试结果
Figure imgf000006_0001
如在复合水泥中惨入部分的本发明生产的低温水泥熟料的水泥, 可使复合水泥性 能远超掺入前的质量, 其样品性能测试结果如表 3所示。
表 3、 低温水泥熟料的水泥与复合水泥及其混合水泥的性能测试结果 低
初 终
水 复
混 3 天 28天 混 凝 凝 凝 3 天 28 天 3 天 28 天 泥 合 石 细
序 稠度 后磨 后磨 土 相 时 时 抗 折 抗 折 抗 压 抗 压 熟 水 膏 度
号 材 % 损损 损损 容 性 间 间 强度 强度 强度 强度 料 泥 % %
% 失重 失重 (cm) (mia (mi (mia) (mia) (mia) (mia) 水 %
Λ 量 ) a)
(g) (g)
%
3:3
1 94 1 1 6 1.8 26.1 0.5 0.1 192 2:20 6.0 9.0 33.2 56.6
5
4:0
6 20 20 54 6 1.8 30.0 0.6 0.2 190 3:01 5.0 9.0 28.6 55.3
0
4:1
7 1 40 54 6 2.0 30.0 1.0 0.6 191 3:10 4.4 8.8 26.0 51.1
5
如在矿渣水泥中掺入部分的本发明生产的低温水泥熟料的水泥, 可使矿渣水泥性 能远超掺入前的质量, 其样品性能测试结果如表 4所示。
表 4、 低温水泥熟料的水泥与矿碴水泥及其混合水泥的性能测试结果
Figure imgf000007_0001
3:3
1 94 1 1 6 1.8 26.1 0.5 0.1 192 2:20 6.0 9.0 33.2 56.6
5
3:5
8 20 20 54 6 2.2 26.5 1.0 0.3 210 2:56 4.8 9.5 29.0 54.3
8
4:0
9 1 40 54 6 2.4 26.5 3.0 1.7 205 3:06 4.2 9.2 25.1 50.2
6
如在粉煤灰水泥中掺入部分的本发明生产的低温水泥熟料的水泥, 可使粉煤灰水 泥性能远超掺入前的质量, 其样品性能测试结果如表 5所示。
表 5、 低温水泥熟料的水泥与粉煤灰水泥及其混合水泥的性能测试结果
Figure imgf000008_0001
综上所述, 本发明方法生产的低温水泥熟料的水泥, 可替代硅酸盐水泥熟料的水 泥使用, 还可与其它品种水泥混合而提高其它品种水泥的质量。 为了进一步了解本发明方法生产的低温水泥熟料的水泥性能, 现以普通水泥为例 与其进一步比较分析如下: 其化学成分与普通水泥含量如表 6所示。
表 6: 低温水泥熟料的水泥与普通水泥的化学成分表
Figure imgf000009_0001
从表 6中看到, 低温水泥熟料的水泥中的 Si02的含量远大于普通水泥中的 Si02 的含量。
由于秸秆灰中大量的无定形 8102与钢渣中的有效 CaO和铝渣中的有效 A1203的成 分有机的结合起来, 通过低温合成, 将原有秸秆灰吸水性大和燃烧反应不完全的结晶 Si02, 立刻转变成有效的无定形状态的 Si02以均匀大小一致的颗粒为基本粒子, 松散 粘聚, 并形成大量纳米结构的孔隙。 是这种纳米结构的 Si02保持无定形状态不变, 同 时改变钢渣材料中结构的玻璃体溶解在无定形的 Si02, 使离子浓度增加进入钢渣网络 结构的空穴, 与活性的阳离子相互作用, 促进钢渣的分解和溶解, 并产生了很高的活 性, 形成了巨大的比表面积, 提高了低温水泥熟料强度, 改变了水泥水化速度和水泥 水化性能。
参见附图 1和 2, 由图 1可见低温水泥熟料的水泥石水化 28天时的结构致密而均 匀, 而普通水泥石水化 28天时的结构多孔而不均质, 可明显看到大的孔洞, 如图 2 所示, 这些大的孔洞是水泥石的最薄弱环节, 而低温水泥熟料能明显改善水泥的孔结 构, 这种表现主要是以秸秆灰与钢渣和铝渣为原料的有机结合, 加温后, 不同程度的 活化, 使低温水泥熟料内部结构的玻璃体变得疏松, 促进相互间的物理化学变化, 使 原料的生料变成熟料, 活化能力增加, 使低温水泥熟料中产生了大量的纳米粒子的空 隙, 这种纳米空隙结构提高了化学活化能力, 从而由纳米粒子的无定形 Si02、 CaO、 A1203粘聚在一起,变成结构疏松的纳米级微孔,因此起到了提高水泥石和砼强度有很 好的增强效果。

Claims

权 利 要 求
1、 一种秸秆灰生产低温水泥熟料的方法, 其特征在于包括如下步骤-
1 )备料: 原材料为秸秆灰、 钢渣和铝渣;
2)配料与成球: 将秸秆灰按重量份为 60〜70份、 钢渣按重量份为 25〜30份、 铝渣按重量份为 5〜10份的比例初步混合后, 在成球机中加入适量水充分混合并搅 拌均匀后制成直径为 5〜10mm的料球输出, 得物料球备用;
3)蒸养和低温煅烧: 将物料球匀速送入烘干旋转窑中, 经 100'C蒸养和 400°C煅 烧共 40分钟后出窑, 即得低温水泥熟料;
4)粉磨: 将低温水泥熟料投入粉磨机中, 加入适量石膏磨细, 即得秸秆灰的低温 水泥熟料的水泥。
2、如权利要求 1所述方法生产的低温水泥熟料的水泥可替代硅酸盐水泥熟料的水 泥与其它品种水泥混合而提高其它品种水泥的质量。
PCT/CN2012/001470 2012-02-13 2012-10-30 秸秆灰生产低温水泥熟料的方法 WO2013120241A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210030707.8 2012-02-13
CN2012100307078A CN102584043B (zh) 2012-02-13 2012-02-13 秸秆灰生产低温水泥熟料的方法

Publications (1)

Publication Number Publication Date
WO2013120241A1 true WO2013120241A1 (zh) 2013-08-22

Family

ID=46473386

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/001470 WO2013120241A1 (zh) 2012-02-13 2012-10-30 秸秆灰生产低温水泥熟料的方法

Country Status (2)

Country Link
CN (1) CN102584043B (zh)
WO (1) WO2013120241A1 (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102584043B (zh) * 2012-02-13 2013-04-17 淮安市楚城水泥有限公司 秸秆灰生产低温水泥熟料的方法
CN103936308B (zh) * 2014-04-22 2016-01-20 江苏省建筑材料研究设计院有限公司 激发用于生产水泥的钢渣早期水化活性的方法
CN104016603B (zh) * 2014-06-27 2016-04-06 淮安市楚城水泥有限公司 工业废渣式混合矿粉的制备方法
CN104844051B (zh) * 2015-04-01 2017-06-06 淮安市水泥厂有限公司 一种水泥助磨剂及其制备方法
CN109020424B (zh) * 2018-08-30 2021-08-13 河北建筑工程学院 基于固体废弃物的新型砌筑砂浆及制备方法
CN110028257A (zh) * 2019-05-09 2019-07-19 滨海金尼环保科技有限公司 一种利用环氧树脂粉生产低温水泥的制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1103856A (zh) * 1994-09-22 1995-06-21 范茂潮 一种将生活垃圾制成水泥的方法
CN101844883A (zh) * 2010-01-28 2010-09-29 汪超 一种新型复合生态水泥及其制品应用
CN102584043A (zh) * 2012-02-13 2012-07-18 淮安市楚城水泥有限公司 秸秆灰生产低温水泥熟料的方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101012120B (zh) * 2007-01-10 2010-08-11 谢涛 一种生态无机复合建筑材料
CN101619608A (zh) * 2008-07-04 2010-01-06 胡明生 轻体保温水泥墙体板
CN201280768Y (zh) * 2008-09-22 2009-07-29 马俊杰 以秸秆砌块为主体的保温墙体

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1103856A (zh) * 1994-09-22 1995-06-21 范茂潮 一种将生活垃圾制成水泥的方法
CN101844883A (zh) * 2010-01-28 2010-09-29 汪超 一种新型复合生态水泥及其制品应用
CN102584043A (zh) * 2012-02-13 2012-07-18 淮安市楚城水泥有限公司 秸秆灰生产低温水泥熟料的方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
YUE, QIANG ET AL.: "The test of using straw ash as admixture of slag cement", CEMENT, November 2009 (2009-11-01), pages 4 - 5 *

Also Published As

Publication number Publication date
CN102584043A (zh) 2012-07-18
CN102584043B (zh) 2013-04-17

Similar Documents

Publication Publication Date Title
WO2013120241A1 (zh) 秸秆灰生产低温水泥熟料的方法
CN101585672B (zh) 一种生物污泥和淤泥混合型陶粒
CN103241966B (zh) 无熟料钢渣再生微粉复合水泥
CN101215142A (zh) 一种拜耳法赤泥复合砖及其生产方法
CN103449796A (zh) 一种污泥蒸压砖及其制备方法
CN108046671A (zh) 一种稻壳灰混凝土及其制备方法
CN102674783A (zh) 蒸压脱硫石膏免煅烧加气砌块
CN102219463B (zh) 免烧型秸杆-泥渣复合自保温材料及其制备方法
CN105060743A (zh) 利用废瓷砖粉制备的水泥材料
CN107082598A (zh) 一种以河湖底泥为主料的环保型路面砖及制备方法
Zhao et al. Preparation of building insulation foam materials by recycling industrial and agroforestry wastes
CN105753406A (zh) 一种掺低温烧粘土的复合胶凝材料及其制备方法
CN101591161B (zh) 利用非金属弃渣生产免烧砌块及制备方法
CN101870563B (zh) 一种粉煤灰组合物及其制备方法和应用
CN106007526B (zh) 一种机制砂收尘灰干混砂浆及其制备方法
CN104926363A (zh) 一种建筑垃圾隔热砖及其制备方法
WO2023226321A1 (zh) 一种填埋场覆土用改性市政污泥及其制备方法
CN103288400B (zh) 以碱渣作为掺合料的混凝土及其制备方法
CN103553392B (zh) 一种铜尾渣活性混合材的制备方法
CN103964714B (zh) 一种利用亚硫酸钙型脱硫石膏制备高性能石膏基复合胶凝材料的方法
CN105585277A (zh) 一种低成本环保免烧砖及其制备方法
CN103979851A (zh) 一种高岭土改性混凝土及其制作方法
CN100368337C (zh) 节能型墙体复合保温砂浆
CN103373837A (zh) 一种大掺量粉煤灰陶粒及由该陶粒制备的空心砌块
CN102718418A (zh) 一种改性锰渣水泥掺合料制备复合硅酸盐水泥的方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12868441

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12868441

Country of ref document: EP

Kind code of ref document: A1