CN1966445A - 一种水泥生料的预处理工艺 - Google Patents

一种水泥生料的预处理工艺 Download PDF

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CN1966445A
CN1966445A CNA2005101045674A CN200510104567A CN1966445A CN 1966445 A CN1966445 A CN 1966445A CN A2005101045674 A CNA2005101045674 A CN A2005101045674A CN 200510104567 A CN200510104567 A CN 200510104567A CN 1966445 A CN1966445 A CN 1966445A
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content
raw material
cement
lime
cement slurry
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梁宝存
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
    • C04B7/44—Burning; Melting
    • C04B7/4469—Burning; Melting in shaft or vertical kilns
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/24—Cements from oil shales, residues or waste other than slag
    • C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
    • C04B7/42—Active ingredients added before, or during, the burning process
    • C04B7/421—Inorganic materials
    • C04B7/424—Oxides, Hydroxides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
    • C04B7/42—Active ingredients added before, or during, the burning process
    • C04B7/421—Inorganic materials
    • C04B7/427—Silicates
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

本发明属于日常生活用品，用于人们刷洗牙齿。一种水泥生料的预处理工艺，其特殊之处在于：首先将水泥生料加上水泥生料量2％至4％的石灰和水泥生料量5％至10％的纯水泥；或首先将水泥生料量加上水泥生料量5％至10％的水玻璃；或首先加上水泥生料是2％至4％的石灰，和水泥生料量8％至15％的浓纸浆废液；接着，加水并在预湿机中混合。采用上述生料预处理工艺，制得的立窑煅烧料球水份分布均匀，粒度均齐；孔隙率达30％，1000℃高温破损率＜10％；球间堆积空隙率达42％；料球强度适中。

Description

一种水泥生料的预处理工艺
(一)所属技术领域
本发明属于日常生活用品，用于人们刷洗牙齿。
(二)背景技术
目前工业用的沸腾炉，由于沸腾风速及排风风量较大、不能采用粉状燃料，只能烧粒状(3～7mm)的煤。所以在这样的炉内烧水泥必须将生料粉先制成球再烧。但是，经过对多种原料配料并采用一般成球方法所制的球入沸腾炉，由于生料球入炉聚然接触1000-1200℃高温，球内水份在此温度下经高温汽化逸出球体，在此温度下生料中的CaCo，分解出的CO2，也需逸出球化经试验此时生料球会不具备足够的强度和保持合理的孔隙率并需事先干燥无法抵抗这种破坏应力的。水泥生料在沸腾炉内煅烧成熟料至少需停留十五分钟。在这段时间里生料在沸腾床中不断运动，受到床内粒状燃料及料球冲刷，此时料球若采用通常的配料方法、料球在这种冲刷的机械力作用下，随着球在炉内的停留时间延长球径变小，直至成粉状。所以需配制不影响烧制水泥的生料球增强剂及抗爆剂以抵抗这种破坏作用。通常讲用粘土配料的生料球，抗高温炸裂及耐磨损性相对好些、但在沸腾炉内1000-1200℃下煅烧这种料球，也不能克服上上述的二大缺点。
(三)发明内容
本发是为了弥补现有技术的不足，提供了一种能满足在不同温度下煅烧水泥熟料所需的水泥生料的预处理工艺。
本发明是通过如下技术方案实现的：
一种水泥生料的预处理工艺，其特殊之处在于：
①首先将水泥生料加上水泥生料量2％至4％的石灰和水泥生料量5％至10％的纯水泥；
②或首先将水泥生料量加上水泥生料量5％至10％的水玻璃；
③或首先加上水泥生料是2％至4％的石灰，和水泥生料量8％至15％的浓纸浆废液；
接着，加水并在预湿机中混合。
采用上述生料预处理工艺：制得的立窑煅烧料球水份分布均匀，粒度均齐；孔隙率达30％，1000℃高温破损率＜10％；球间堆积空隙率达42％；料球强度适中。采用该工艺的水泥厂的产量增加5～10％，热耗降低6％左右，并解决了该工序的粉尘污染等。沸腾炉试烧已取得了综合利用煤略等工业废渣烧制水泥的效果。
(四)具体实施方式
水泥生料的预处理工艺是：首先将水泥生料加上水泥生料量2％至4％(2％最佳)的石灰和水泥生料量5％至10％(10％最佳)的纯水泥。或首先将水泥生料量加上水泥生料量5％至10％(8％最佳)的水玻璃，或加上水泥生料是2％至4％(2％最佳)的石灰，和水泥生料量8％至15％(10％最佳)的浓纸浆废液；接着，加水并在预湿机中混合。然后送入盘式成球机制成粒径为3～7mm，孔隙率为30～35％的水泥生料料球，其成球时间为100秒。最后将水泥生料料球径养护塔在50至90℃(70℃最佳)温度下蒸养6至10小时(8小时最佳)或在室温下自然养护二天以上。
一般情况下采用粘土配制的生料制得的生料球性能易达到立窑及立波尔窑煅烧要求。但是采用石煤及煤矸石等塑性差的原料配料时难于制备性能好的料球，只有加一定量的石灰、水玻璃、浓纸浆液混合后制成料球，此种料球无需再处理，能满足立窑和立波尔窑的生产需要。
但上述料球满足不了沸腾锅炉煅烧料球的要求为此在水泥生料中加入一定量石灰的同时还要加入一定量的抗爆剂一纯水泥等经加水混合，成球，养护处理能满足沸腾炉在1000～1200℃煅烧水泥熟料的要求。
大量的试验证明；沸腾炉烧水泥熟料所需的料球有如下性能要求：粒径3～7mm；干球的孔隙率30～35％；抗压强度5Kg/个球以上；1000～1200o℃高温破损率＜10％。

Claims (1)

1.一种水泥生料的预处理工艺，其特征是：
①首先将水泥生料加上水泥生料量2％至4％的石灰和水泥生料量5％至10％的纯水泥；
②或首先将水泥生料量加上水泥生料量5％至10％的水玻璃；
③或首先加上水泥生料是2％至4％的石灰，和水泥生料量8％至15％的浓纸浆废液；
接着，加水并在预湿机中混合。
CNA2005101045674A 2005-11-17 2005-11-17 一种水泥生料的预处理工艺 Pending CN1966445A (zh)

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CNA2005101045674A CN1966445A (zh) 2005-11-17 2005-11-17 一种水泥生料的预处理工艺

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CNA2005101045674A CN1966445A (zh) 2005-11-17 2005-11-17 一种水泥生料的预处理工艺

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CN1966445A true CN1966445A (zh) 2007-05-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112209643A (zh) * 2020-10-22 2021-01-12 杭州山亚南方水泥有限公司 一种稳定水泥生料制作的生产工艺

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112209643A (zh) * 2020-10-22 2021-01-12 杭州山亚南方水泥有限公司 一种稳定水泥生料制作的生产工艺

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