CN110407587A - 一种建筑陶瓷干湿法制粉工艺 - Google Patents
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Abstract
本发明公开了一种建筑陶瓷干湿法制粉工艺,包括以下步骤:(1)湿法制浆:将各软质料分别经化浆除渣、均化化浆后待用;将各硬质料经鄂式破碎、辊压破碎后分别快速球磨,再进行均化处理后待用;按原料配比称取经上述处理后的软质料和硬质料;加水湿法连续球磨;经过筛除铁均化后制得浆料。(2)干法制粉:按与步骤(1)相同的原料配比称取各原料;经喂料机送入均化仓均化;经立磨机将上述均化的原料干磨成过250目筛的微粉;经过筛除铁制得干粉。(3)干湿法制粉:将上述(1)和(2)制得的浆料与干粉按1:2.5~3.5的比例配量;采用干法造粒机进行造粒;进行流化干燥;经过筛后陈腐。本发明制备的粉料强度高,细颗粒少,流动性好。
Description
技术领域
本发明涉及建筑陶瓷粉料制备工艺技术领域,具体涉及一种建筑陶瓷干湿法制粉工艺。
背景技术
目前,建筑陶瓷的制粉工艺主要包括喷雾干燥湿法制粉工艺和干法制粉工艺两种。
喷雾干燥湿法制粉工艺技术应用于陶瓷墙地砖干压成型粉料的制备,其制备的粉料可满足大吨位自动压砖机的要求,生产出高质量、高档次的产品。喷雾干燥湿法工艺的优点被大家所公认。然而,该工艺经加水球磨所得的浆料含水率约为35%,经喷雾干燥后造粒成含水率约7%的粉料,因此需干燥约28%的水份,存在能耗高的不足,在今天能源价格上涨及墙地砖市场竞争中显得愈加突出。
干法制粉的工艺过程为原料经立磨或雷蒙磨制成细粉,含水率约为2%,然后经过造粒机加水造粒,造粒后水份约为12%,再经过液化干燥后制成含水7%左右的粉料。目前国内外开发的干法造粒机设备制备的粉料颗粒虽能满足自动压砖机的生产要求,砖的内在质量也可达到国家产品质量标准,但与湿法工艺制粉粉料比,其粉料仍在下细粉多,粉料流动性差,粉料强度不佳,输送不便等缺点。
发明内容
本发明的目的是提供一种建筑陶瓷干湿法制粉工艺,基于造粒机水份的要求,采用干法制粉和湿法制浆相结合的干湿法制粉工艺,通过合理的粉浆配比,使造粒后的含水率为13-14%,相比湿法制粉能耗大幅度降低。同时在干湿法制粉过程中通过喷浆雾化造粒工序,浆料粘性好,造出的粉料强度高,细颗粒少,粉料流动性好,有利于粉料的运输和成形。
本发明解决其技术问题所采用的技术方案是:一种建筑陶瓷干湿法制粉工艺,其特征在于包括以下步骤:
(1)湿法制浆:
① 将各软质料分别经化浆除渣、均化化浆后待用;
② 将各硬质料经鄂式破碎、辊压破碎后快速球磨,再分别进行均化处理后待用;
③ 按原料配比称取经上述①和②处理后的软质料和硬质料;
④ 加水湿法连续球磨;
⑤ 经过筛除铁均化后制得浆料;
(2)干法制粉:
① 按与步骤(1)相同的原料配比称取各原料;
② 经喂料机送入均化仓均化;
③ 经立磨机将上述均化的原料干磨成过250目筛的微粉;
④ 经过筛除铁制得干粉。
(3)干湿法制粉:
① 将上述(1)和(2)制得的浆料与干粉按1:2.5~3.5的比例配量;
② 采用干法造粒机进行造粒;
③ 进行流化干燥;
④ 经过筛后陈腐。
进一步的,所述湿法制浆中软质料过14目筛进行除渣处理。
进一步的,所述湿法制浆中经连续球磨后泥浆料的含水率为35~45%,流速30-60秒。
进一步的,所述湿法制浆中软质料过14目筛进行除渣处理,经化浆后浆料的含水率为35~45%,流速30-60秒。
进一步的,所述干法制粉的原料进料时各原料总的含水率<12%。
进一步的,所述干法制粉的除铁方式为磁棒除铁。
进一步的,所述干法制粉制得的干粉含水率为1-4%。
进一步的,所述干法造粒机造粒制得的粉料含水率为13-14%。
进一步的,所述干湿法制粉流化干燥后制得的粉料含水率为6-8%。
进一步的,所述干湿法制粉造粒机制得的粉料颗粒级配为:20目:<1%;30目:2~5%;40目:10-15%;60目10-15%;80目:20-30%;100目:20-30%;120目10-20%;200目以下:<15%。
进一步的,所述干湿法制粉的陈腐时间为3-5天。
本发明的有益效果是:基于造粒机水份的要求,采用干法制粉和湿法连续球磨相结合的制粉工艺,通过合理的粉浆配比,使造粒后的含水率为13-14%,相比湿法制粉能耗大幅度降低。同时在干湿法制粉过程中通过喷浆雾化造粒工序,浆料粘性好,造出的粉料强度高,细颗粒少,粉料流动性好,有利于粉料的运输和成形。
相比湿法制粉工艺,本申请的干湿法制粉工艺还具有以下有益效果:
(1)节约用水约60%:
湿法球磨机浆料的含水率为35%左右,传统喷雾造粒工艺过程需要把含水率35%的料浆烘干至7%含水率的料球,烘干过程需烘干约28%的水分,粉料制备水耗约为0.5m3/t粉料。而本申请的干湿法按湿料与干料的比例1:3~5进行干法造粒后,含水率为13-14%,流化床只需要把含水率13-14%的料干燥至7%含水率的成品料,烘干过程只需烘干6-7%的水分,粉料制备水耗约为0.2m3/t粉料,节水率约为60%。
(2)节约能耗约70%:
由于干湿法制粉的工艺环节比湿法制粉工艺的造粒烘干水分的烘干量减少约21-22%,而传统喷雾造粒工艺粉料制备能耗约为55~60kg标煤/ t粉料,本申请的干湿法粉料制备能耗约为16.5-18kg标煤/ t粉料,节约的能耗约70%。
(3)减少有害气体和粉尘排放:
干湿法生产因蒸发的水分约为传统湿法的三分之一,所需燃料少,燃料产生的烟气排放总量少于湿法生产,脱硫脱硝处理量小,且传统湿法制粉工艺必须要进行脱硫脱硝处理才能到达排放要求,需超消费大量的人力和物力。本申请的干湿法制粉工艺可较大幅度减少SO2等有害污染物质及粉尘的排放。
附图说明
图1为建筑陶瓷干湿法制粉工艺流程图。
具体实施方式
为了使本发明所解决的技术问题、技术方案及有益效果更加清楚明白,以下结合工艺流程图与实施例,对本发明作进一步的说明。
本发明的建筑陶瓷干湿法制粉工艺过程如图1所示,其工艺过程主要包括湿法制浆、干法制粉和干湿法制粉三个步骤,具体如下:
(1)湿法制浆:
首先将配方中的硬质料和软质料进行分类,其中软质料是指粘土类原料,如白泥、黑泥、中间土和膨润土等粘土类原料,硬质料是指除软质料以外的砂石类原料,如钾钠长石、石灰石、透辉石等瘠性料;再对各硬质料和软质料分别进行预处理。
软质料的预处理过程为:先对软质料进行加水化浆除渣处理,将原料过14目筛,去除原料中的粗颗粒及飘浮有机杂质,使原料的化学成分更稳定,然后将原料输送至浆池进行均化。
硬质料的预处理过程为:先对硬质料经鄂式破碎机进行粗碎,再经辊压破碎机进行二次破碎,然后进行快速球磨后输送至均化仓均化。
按建筑陶瓷产品的原料配比称取上述经预处理的硬质料与软质料,加水进行连续球磨,连续球磨后的浆料含水率为35~45%,流速30-60秒。将球磨后的浆料,输送至进均化浆池并进行过筛除铁。
(2)干法制粉:
首先按步骤(1)湿法制浆相同的建筑陶瓷产品的原料配比称取各原料,原料进料时各原料总的含水率控制在12%以内,然后经喂料机输送至均化仓均化,再经立磨机进行干磨,干磨后的微粉细度为过250目筛,含水率为1-4%。干磨后的微粉输送至微粉仓并进行过筛除铁,除铁方式为磁棒除铁。
(3)干湿法制粉:
首先将步骤(1)和(2)制得的浆料与干粉料按1:2.5~3.5的比例进行配量,然后将浆料与干粉料一起输送至干法造粒机,在造粒机中原料进行喷浆雾化造粒工序,浆料喷入造粒机后,形成浆料雾滴,干粉则弥散漂浮于空中,浆料雾滴与干粉接触后将粘附于干粉表面,形成浆料雾滴包裹干粉的浆滴干粉包裹体,浆滴干粉包裹体在造粒机内螺旋气流的作用下受重力与离心力的影响将下落并滚圆夯实,最终制得高强度的实心球形粉料颗粒。经造粒机制得的粉料含水率为13-14%,然后将粉料进行流化干燥,干燥后的粉料含含水率为6-8%,为使原料的料性更均匀,颗粒经配更合理,还需对干燥后的粉料再进行过筛和陈腐,陈腐时间为3-5天,最终制得的粉料颗粒级配为:20目:<1%;30目:2~5%;40目:10-15%;60目10-15%;80目:20-30%;100目:20-30%;120目10-20%;200目以下:<15%,流动休止角38-40°。
实施例1:
一种吸水率为0.5%以下瓷质砖的干湿法制粉工艺,其制备工艺过程如下:
(1)湿法制浆:
① 将软质料泥料和中间土分别经化浆除渣、均化化浆后待用;
② 将硬质料钾钠石粉、钾钠砂、中温砂分别经鄂式破碎、辊压破碎后快速球磨,再进行均化处理后待用;
③ 按原料配比称取经上述①和②处理后的软质料和硬质料,其中:泥料20%;中间土20%;钾钠石粉31%;钾钠砂10%;中温砂19%;
④ 加水湿法连续球磨;
⑤ 经过筛除铁均化后制得浆料,浆料的含水率为35%,流速40秒。
(2)干法制粉:
① 按湿法制浆的原料配比称取各原料;
② 经喂料机送入均化仓均化;
③ 经立磨机将上述均化的原料干磨成过250目筛的微粉;
④ 经过筛除铁制得干粉。
(3)干湿法制粉:
① 将上述(1)和(2)制得的浆料与干粉按1:2.5的比例配量;
② 采用干法造粒机进行造粒;
③ 进行流化干燥;
④ 经过筛后陈腐,制得的粉料的含水率为6%,粉料颗粒级配为:20目:0.5%;30目:5%;40目:10%;60目:15%;80目:20%;100目:20%;120目16%;200目以下:13.5%,流动休止角38°。
实施例2:
一种吸水率为10%以上的墙地砖的干湿法制粉工艺,其制备工艺过程如下:
(1)湿法制浆:
① 将软质料泥料和中间土分别经化浆除渣、均化化浆后待用;
② 将硬质料透辉石、铝质土、砂质土、石灰石粉和回收废料分别经鄂式破碎、辊压破碎后快速球磨,再进行均化处理后待用;
③ 按原料配比称取经上述①和②处理后的软质料和硬质料,其中:泥料20%;中间土15%;透辉石15%;铝质土15%;砂质土20%;石灰石粉3%和回收废料12%;
④ 加水湿法连续球磨;
⑤ 经过筛除铁均化后制得浆料,浆料的含水率为40%,流速45秒。
(2)干法制粉:
① 按湿法制浆的原料配比称取各原料;
② 经喂料机送入均化仓均化;
③ 经立磨机将上述均化的原料干磨成过250目筛的微粉;
④ 经过筛除铁制得干粉。
(3)干湿法制粉:
① 将上述(1)和(2)制得的浆料与干粉按1:3的比例配量;
② 采用干法造粒机进行造粒;
③ 进行流化干燥;
④ 经过筛后陈腐,制得的粉料的含水率为8%,粉料颗粒级配为:20目:0.8%;30目:4%;40目:11%;60目:10%;80目:22%;100目:24%;120目18%;200目以下:10.2%,流动休止角40°。
实施例3:
一种吸水率为3-6%的炻质砖的干湿法制粉工艺,其制备工艺过程如下:
(1)湿法制浆:
① 将软质料泥料、中间土和膨润土分别经化浆除渣、均化化浆后待用;
② 将硬质料低温钠砂、中温砂、陶石、回收废料分别经鄂式破碎、辊压破碎后快速球磨,再进行均化处理后待用;
③ 按原料配比称取经上述①和②处理后的软质料和硬质料,其中:泥料20%;中间土12%;膨润土3%;低温钠砂20%;中温砂20%;陶石20%;回收废料5%;
④ 加水湿法连续球磨;
⑤ 经过筛除铁均化后制得浆料,浆料的含水率为40%,流速45秒。
(2)干法制粉:
① 按湿法制浆的原料配比称取各原料;
② 经喂料机送入均化仓均化;
③ 经立磨机将上述均化的原料干磨成过250目筛的微粉;
④ 经过筛除铁制得干粉。
(3)干湿法制粉:
① 将上述(1)和(2)制得的浆料与干粉按1:3.5的比例配量;
② 采用干法造粒机进行造粒;
③ 进行流化干燥;
④ 经过筛后陈腐,制得的粉料的含水率为8%,粉料颗粒级配为:20目:0.6%;30目:3%;40目:12%;60目:13%;80目:25%;100目:23%;120目14%;200目以下:9.4%,流动休止角39°。
为更进一步说明本发明与湿法制粉工艺的优越效果,对利用本发明的建筑陶瓷干湿法制粉工艺制得的粉料性能与传统湿法制粉工艺和干法制粉工艺制得的粉料性能进行比较,具体技术参数对比表如下:
本发明实施例配比表
本申请与湿法和干法制粉工艺粉料技术参数对比表
从上表可以看出:采用本申请的干湿法制粉工艺制备的粉料,在粉料水分与湿法制粉工艺和干法制粉工艺相接近时,其粉料的颗粒级配和流动性均与干法制粉工艺制备的粉料性能相近,虽粉料的流动性略低于湿法工艺,但均能满足现有建筑陶瓷砖生产技术的要求。本申请的干湿法制备工艺,由于其在节水、节能及减少粉尘及有害气体排放方面相对于湿法制粉工艺均具有明显优势;而与干法制粉工艺相比,本申请的干湿法制备工艺利用通过喷浆雾化造粒工序,浆料粘性好,造出的粉料强度更高,粉料均匀性更佳。因此,本申请的干湿法制粉工艺综合性能优于现役的湿法制粉工艺与干法制粉工艺。
显然,上述实施例仅是为清楚地说明所作的举例,而并非对实施方式的限定。对于所属领域的普通技术人员来说,在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本发明的保护范围之中。
Claims (10)
1.一种建筑陶瓷干湿法制粉工艺,其特征在于包括以下步骤:
(1)湿法制浆:
① 将各软质料分别经化浆除渣、均化化浆后待用;
② 将各硬质料经鄂式破碎、辊压破碎后快速球磨,再分别进行均化处理后待用;
③ 按原料配比称取经上述①和②处理后的软质料和硬质料;
④ 加水湿法连续球磨;
⑤ 经过筛除铁均化后制得浆料;
(2)干法制粉:
① 按与步骤(1)相同的原料配比称取各原料;
② 经喂料机送入均化仓均化;
③ 经立磨机将上述均化的原料干磨成过250目筛的微粉;
④ 经过筛除铁制得干粉;
(3)干湿法制粉:
① 将上述(1)和(2)制得的浆料与干粉按1:2.5~3.5的比例配量;
② 采用干法造粒机进行造粒;
③ 进行流化干燥;
④ 经过筛后陈腐。
2.根据权利要求1所述的建筑陶瓷干湿法制粉工艺,其特征在于:所述湿法制浆中软质料过14目筛进行除渣处理。
3.根据权利要求1所述的建筑陶瓷干湿法制粉工艺,其特征在于:所述湿法制浆中经连续球磨后浆料的含水率为35~45%,流速30-60秒。
4.根据权利要求1所述的建筑陶瓷干湿法制粉工艺,其特征在于:所述干法制粉的原料进料时各原料总的含水率<12%。
5.根据权利要求1所述的建筑陶瓷干湿法制粉工艺,其特征在于:所述干法制粉的除铁方式为磁棒除铁。
6.根据权利要求1所述的建筑陶瓷干湿法制粉工艺,其特征在于:所述干法制粉制得的干粉含水率为1-4%。
7.根据权利要求1所述的建筑陶瓷干湿法制粉工艺,其特征在于:所述干法造粒机造粒制得的粉料含水率为13-14%。
8.根据权利要求1所述的建筑陶瓷干湿法制粉工艺,其特征在于:所述干湿法制粉流化干燥后制得的粉料含水率为6-8%。
9.根据权利要求1所述的建筑陶瓷干湿法制粉工艺,其特征在于:所述干湿法制粉制得的粉料颗粒级配为:20目:<1%;30目:2~5%;40目:10-15%;60目10-15%;80目:20-30%;100目:20-30%;120目10-20%;200目以下:<15%。
10.根据权利要求1所述的建筑陶瓷干湿法制粉工艺,其特征在于:所述干湿法制粉的陈腐时间为3-5天。
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| IT202100008858A1 (it) * | 2021-04-08 | 2022-10-08 | Aldo Tomaso Balelli | Metodo e impianto per la preparazione di un impasto granulare per la produzione di piastrelle ceramiche |
| WO2022215101A1 (en) * | 2021-04-08 | 2022-10-13 | Balelli Aldo Tomaso | Method and plant for preparing a material suitable for manufacturing ceramic tiles |
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| CN118324503A (zh) * | 2023-01-12 | 2024-07-12 | 佛山市东鹏陶瓷有限公司 | 一种低吸水率陶瓷砖及其制备方法 |
| CN118324505A (zh) * | 2023-01-12 | 2024-07-12 | 佛山市东鹏陶瓷有限公司 | 一种陶瓷坯体粉料的干法分类制粉工艺 |
| CN117326874A (zh) * | 2023-09-27 | 2024-01-02 | 清远市简一陶瓷有限公司 | 一种通过分段式球磨工艺制备陶瓷砖的方法及其陶瓷砖 |
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