CN115066468B - 利用煤矸石制备涂料用复合颜填料的方法 - Google Patents
利用煤矸石制备涂料用复合颜填料的方法 Download PDFInfo
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- CN115066468B CN115066468B CN202180013820.2A CN202180013820A CN115066468B CN 115066468 B CN115066468 B CN 115066468B CN 202180013820 A CN202180013820 A CN 202180013820A CN 115066468 B CN115066468 B CN 115066468B
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- coal gangue
- mill
- gangue
- composite pigment
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- 239000003245 coal Substances 0.000 title claims abstract description 76
- 239000000049 pigment Substances 0.000 title claims abstract description 48
- 239000003973 paint Substances 0.000 title claims abstract description 46
- 239000000945 filler Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 40
- 239000002131 composite material Substances 0.000 title claims abstract description 39
- 238000001354 calcination Methods 0.000 claims abstract description 35
- 238000000227 grinding Methods 0.000 claims abstract description 26
- 230000004048 modification Effects 0.000 claims abstract description 21
- 238000012986 modification Methods 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000007385 chemical modification Methods 0.000 claims abstract description 10
- 238000012216 screening Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 15
- 239000003607 modifier Substances 0.000 claims description 15
- 239000012298 atmosphere Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- 239000007822 coupling agent Substances 0.000 claims description 6
- MOUPNEIJQCETIW-UHFFFAOYSA-N lead chromate Chemical compound [Pb+2].[O-][Cr]([O-])(=O)=O MOUPNEIJQCETIW-UHFFFAOYSA-N 0.000 claims description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims description 4
- 229910052712 strontium Inorganic materials 0.000 claims description 4
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 239000004111 Potassium silicate Substances 0.000 claims description 2
- 239000004115 Sodium Silicate Substances 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 150000001298 alcohols Chemical class 0.000 claims description 2
- 150000004645 aluminates Chemical class 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 claims description 2
- 229910052788 barium Inorganic materials 0.000 claims description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 2
- RFAFBXGYHBOUMV-UHFFFAOYSA-N calcium chromate Chemical compound [Ca+2].[O-][Cr]([O-])(=O)=O RFAFBXGYHBOUMV-UHFFFAOYSA-N 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 150000004665 fatty acids Chemical class 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 claims description 2
- 239000010445 mica Substances 0.000 claims description 2
- 229910052618 mica group Inorganic materials 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- -1 phosphomolybdate Chemical compound 0.000 claims description 2
- 235000019353 potassium silicate Nutrition 0.000 claims description 2
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 2
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 2
- 150000002910 rare earth metals Chemical class 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 150000005846 sugar alcohols Polymers 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 2
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- NDKWCCLKSWNDBG-UHFFFAOYSA-N zinc;dioxido(dioxo)chromium Chemical compound [Zn+2].[O-][Cr]([O-])(=O)=O NDKWCCLKSWNDBG-UHFFFAOYSA-N 0.000 claims description 2
- XAEWLETZEZXLHR-UHFFFAOYSA-N zinc;dioxido(dioxo)molybdenum Chemical compound [Zn+2].[O-][Mo]([O-])(=O)=O XAEWLETZEZXLHR-UHFFFAOYSA-N 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000007885 magnetic separation Methods 0.000 description 10
- 238000005406 washing Methods 0.000 description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 239000006229 carbon black Substances 0.000 description 7
- 238000009826 distribution Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000006148 magnetic separator Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 235000010215 titanium dioxide Nutrition 0.000 description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000005995 Aluminium silicate Substances 0.000 description 3
- 235000012211 aluminium silicate Nutrition 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000008199 coating composition Substances 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003895 groundwater pollution Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 1
- 229910000165 zinc phosphate Inorganic materials 0.000 description 1
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- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
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- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
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- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
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- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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Abstract
本发明的实施例提供了一种利用煤矸石制备涂料用复合颜填料的方法。所述方法包括:预处理煤矸石,所述预处理煤矸石包括对煤矸石进行筛选和将筛选后的煤矸石进行粗粉碎;对预处理后的煤矸石进行热处理,其中所述热处理包括两次煅烧所述煤矸石;由超细粉碎设备执行热处理后的煤矸石的超细粉碎处理;对超细粉碎处理后的煤矸石进行物理改性以得到复合颜填料;对复合颜填料进行化学改性以得到改性复合颜填料。
Description
技术领域
本发明属于工业固体废弃物绿色资源化利用领域,尤其涉及一种利用煤矸石制备涂料用复合颜填料的方法。
背景技术
目前,炭黑是涂料领域应用最广泛着色剂(颜料),常被用于生产黑色或灰色涂料。然而炭黑的成分、密度、粒度、亲水性等物化性质与常用无机填料(如碳酸钙、硫酸钡、煅烧高岭土、滑石、硅灰石等)差异较大,容易引起涂料中颜料、填料的分层,导致涂料的浮色和发花,进而影响涂料的储存稳定性。炭黑比表面积较大、吸油值高,易吸附大量的溶剂和助剂,造成油性涂料储存后的返粗、变稠和泛白等问题。目前,虽然通过物理包覆或化学包覆手段,制备出钛白粉基白色复合颜填料,但是由于炭黑和无机填料性质的差异,导致得到相应的复合颜填料难度较大,尚未有黑色复合颜填料的相关报道。
煤矸石是煤矿在开采和洗选过程中产生的干基灰分大于50%的岩石,约占煤炭开采量的12%,仅2020年中国就有约8亿吨煤矸石产生。据不完全统计,中国目前煤矸石的堆存量达到60亿吨,占地约20余万亩,大量的煤矸石堆积占用大量土地的同时还会造成地表下沉、水土流失、地下水污染以及空气污染。中国目前煤矸石综合利用率不足50%,主要用于煤矸石发电、生产建材、土地复垦回填和生产煅烧高岭土,总体来看存在产品附加值较低或能耗高的问题。
发明内容
鉴于上述的现有涂料中黑色颜料和煤矸石综合利用方面存在的问题,本发明提供了一种利用煤矸石制备涂料用复合颜填料的方法。
具体地,煤矸石中含有少量的煤类有机质其颜色为深黑色,在形成过程中煤和成岩矿物夹杂共生,结合非常稳定,而且煤矸石的成岩矿物高岭土、石英等涂料常用填充料,因此,煤矸石具备生产涂料用复合颜填料的潜力。
本发明所述的方法能够针对煤矸石的矿物特性,通过合适的生产工艺制备出复合颜填料(即该复合颜填料同时具有颜料和填料的功能),不仅解决涂料行业难题,也实现对煤矸石的绿色高值化利用,该方法技术普适性好,对多种煤矸石都能进行综合利用。
根据本发明的一个方面,提供了一种利用煤矸石制备涂料用复合颜填料的方法,所述方法包括预处理、热处理、超细粉碎、物理改性和化学改性五个步骤中的一些步骤:
(1)预处理主要包括水洗、筛选、粗碎和磁选四个步骤。所述水洗是用水洗去煤矸石表面的泥沙和浮尘。所述筛选是手工剔除出颜色较浅、煤类有机质分布不均的共生矿物。所述粗碎是利用粗碎设备将原矿粉碎至80-200目。所述磁选是利用磁选机将粗碎后物料中含铁量较高的颗粒去除。
(2)热处理:所述热处理是对磁选后的物料进行多段煅烧,去除煤矸石中的挥发分,对于挥发分较低的煤矸石可以省去此工艺。
(3)超细粉碎:选用超细粉碎设备将煤矸石粉碎至一定细度,超细粉碎后的物料可以作为复合颜填料用于水性涂料、油漆或粉末涂料。
(4)物理改性:将一定量物理改性剂,在少量粘合助剂和机械力化学的作用下,与超细煤矸石粉混合均匀,并紧密结合,得到复合颜填料,可用于水性涂料、油漆或粉末涂料。
(5)化学改性:利用改性设备,选择合适的改性剂及用量,在一定条件下对物理改性后物料进行表面处理,制得改性复合颜填料用于水性涂料、油漆或粉末涂料。
通过上述可知,本发明所述的方法所涉及的生产流程都为纯物理过程,不涉及强酸强碱、高压等过程,生产工艺安全、绿色、环保,无三废排放,对不同类型的煤矸石适应性较高。由本发明所述方法生产的复合颜填料,分散均匀、与树脂亲和性好、着色效果优异,可广泛应用于油漆、水漆和粉末涂料领域。本发明的技术方案在解决了涂料行业难题的同时,真正实现对煤矸石的绿色高附加值利用。
附图说明
为了更清楚地说明本发明实施方式的技术方案,下面将将结合附图和详细实施方式对本发明进行详细说明,显而易见地,下面描述中的附图仅仅是本发明的一些实施方式,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其它的附图。其中:
图1为根据本发明的一个实施例所述的利用煤矸石制备涂料用复合颜填料的方法的流程图。
具体实施方式
为使本发明的上述目的、特征和优点能够更加明显易懂,下面结合附图对本发明的具体实施方式做详细的说明。
参见图1,本发明的实施例提供了一种利用煤矸石制备涂料用复合颜填料的方法,所述方法最多包括预处理、热处理、超细粉碎、物理改性和化学改性五个步骤:
(1)预处理主要包括水洗、筛选、粗碎和磁选四个步骤。所述水洗是用水洗去煤矸石表面的泥沙和浮尘。所述筛选是手工剔除出颜色较浅、煤类有机质分布不均的共生矿物。所述粗碎是利用粗碎设备将原矿粉碎至80-200目。所述磁选是利用磁选机将粗碎后物料中含铁量较高的颗粒去除。
(2)热处理:所述热处理是对磁选后的物料进行多段煅烧,去除煤矸石中的挥发分,对于挥发分较低的煤矸石可以省去此工艺。
(3)超细粉碎:选用超细粉碎设备将煤矸石粉碎至一定细度,超细粉碎后的物料可以作为复合颜填料用于水性涂料、油漆或粉末涂料。
(4)物理改性:将一定量物理改性剂,在少量粘合助剂和机械力化学的作用下,与超细煤矸石粉混合均匀,并紧密结合,得到复合颜填料,可用于水性涂料、油漆或粉末涂料。
(5)化学改性:利用改性设备,选择合适的改性剂及用量,在一定条件下对物理改性后物料进行表面处理,制得改性复合颜填料用于水性涂料、油漆或粉末涂料。
预处理中的粗碎是由粗碎设备执行将筛选后的煤矸石进行粗粉碎的步骤,所述粗碎设备包括锤式破碎机、圆锥式破碎机、反击式破碎机、辊压机、立磨和雷蒙磨中的任一种或它们的任意组合。在将煤矸石粗粉碎步骤之后,所述方法还包括对粗粉碎的煤矸石进行磁选,其中磁选出的富铁物料用作水泥原料,磁选后的煤矸石用于后续的超细加工。在一些实施例中,由干法磁选机执行对粗粉碎的煤矸石进行磁选的步骤,所述干法磁选机的磁场强度的范围为0.02-2.0T。
对煤矸石进行热处理,其中所述热处理包括两次煅烧煤矸石,第一次煅烧将煤矸石中的吸附水和结合水去除,使煤系有机质与无机矿物结合更加紧密,第二次煅烧将煤矸石中的低温挥发分去除,提高煤矸石的稳定性。通常,所述煅烧煤矸石由煅烧设备在煅烧气氛下执行,所述煅烧设备包括隧道窑、内热式回转窑、外热式回转窑和推板窑中的任一种或它们的任意组合,所述煅烧气氛包括惰性气体保护气氛、还原气氛或弱氧化气氛。在一个示例中,所述煅烧包括对煤矸石进行第一次煅烧和第二次煅烧,所述第一次煅烧的温度范围为100-200℃(例如150℃或180℃)并且煅烧的时间范围为10-480分钟(例如200分钟或300分钟);第二次煅烧的温度范围为200-1300℃(例如250℃或300℃)并且煅烧的时间范围为10-480分钟(例如为300分钟或400分钟)。
在一个示例中,由超细粉碎设备执行超细粉碎粗粉碎后的煤矸石的步骤,所述超细粉碎设备包括环辊磨、机械磨、球磨机、气流磨、蒸汽磨、热空气气流磨、搅拌磨和砂磨机中的任一种或它们的任意组合;超细粉碎后的煤矸石的颗粒的粒度在800-12500目之间,优选地8000目或10000目。
在一个示例中,在超细粉碎粗碎后的煤矸石步骤之后,对超细粉碎后的煤矸石进行物理改性,进而得到颜色可控、防腐性能优越、着色稳定的。所述物理改性在超细粉碎设备的磨腔内完成。所述物理改性是将物理改性剂、粘合助剂和超细粉碎后的煤矸石一起喂入磨腔内粉碎并混合(优选地混合均匀);所述物理改性剂包括红丹、锶铬黄、锌铬黄、钡铬黄、钙铬黄、磷酸盐、磷钼酸盐、三聚磷酸二氢铝、钼酸锌、硼酸锌、云母氧化铁、钛白粉、纳米氧化锌、石墨、群青、酞菁蓝、硫酸钡、铁红、铁黑、硫酸钡等物质中的任一种或更多种的混合物;所述物理改性剂为煤矸石量的0%-30%;所述粘合助剂为硅酸钠、硅酸钾、双硅烷偶联剂等;所述粘合助剂为煤矸石量的0%-5%。
在一个示例中,在物理改性步骤之后,对煤矸石粉进行化学改性以得到改性复合颜填料。由改性设备执行所述化学改性的步骤。所述改性设备包括三辊改性机、高速搅拌机和塔式改性机中的任一种或它们的任意组合,所述表面改性使用的改性剂为硅烷偶联剂、铝酸酯偶联剂、钛酸酯偶联剂、稀土偶联剂、脂肪酸及其盐、聚醇类物质、高级醇类中的任一种或它们的任意组合;所述改性剂用量为超细粉碎后的煤矸石的粉体质量的0.01-25%(例如10%或15%);所述表面改性的温度范围为50-300℃(例如200℃)。
可知,所述涂料为粉末涂料、水性涂料或油漆。
以下提供了几个具体的实施例来详细说明本发明的方法的各个步骤,显然,本发明的技术方案不限于下述提供的实施例的限制。
实施例1
内蒙古准格尔某煤矿的煤矸石的原料为块状,其主要化学组成如表1所示。在本实施例中,采用的加工工艺为水洗、筛选、粗粉碎、磁选、热处理、超细粉碎、物理改性和化学改性。具体制备工艺参数如下:用自来水洗去煤矸石表面灰尘,手工选除浅色的石块,自然风干后,利用颚式破碎机将煤矸石原矿粉碎至20mm以下,再用雷蒙磨粗粉碎至200目。粗碎完成后,用干法磁选机在1.5T的磁场强度下,对的煤矸石粗粉进行多次磁选,以降低煤矸石中的含铁量。然后利用隧道窑在氮气保护下对磁选后的煤矸石进行两段煅烧,其中第一段煅烧温度为150℃,煅烧时间为50分钟(min),第二段煅烧温度为290℃,煅烧时间为60min;将煅烧后物料加入质量分数为0.5%的锶铬黄和质量分数为0.4%的酞菁蓝后,用流化床式气流磨在0.85Mpa压力和1700rpm的分级机转速下进行超细粉碎和物理改性,得到复合颜填料A1;最后对超细粉碎后的部分物料利用高速搅拌机,以质量分数为1%的硅烷偶联剂(KH560)为改性剂,在120℃下连续搅拌15min,制得改性复合颜填料A2,其粒度分布如表2所示。
表1物料化学组成
表2不同填料粒度分布
实施例2
山西阳泉某煤矿的煤矸石的原料为块状,其主要化学组成如表3所示。在本实施例中,采用的加工工艺为水洗、筛选、粗粉碎、磁选、热处理、超细粉碎,物理改性和化学改性。具体制备工艺参数如下:用自来水洗去煤矸石表面灰尘,手工选除浅色的石块,自然风干后,利用颚式破碎机将煤矸石原矿粉碎至20mm以下,再用立磨粗粉碎至200目。粗碎完成后,用干法磁选机在1.4T的磁场强度下,对的煤矸石粗粉进行多次磁选,以降低煤矸石中的含铁量。然后利用外燃式回转窑,在还原气氛下对干燥后的煤矸石进行两段煅烧,窑头温度为100℃,窑尾温度为400℃,第一段煅烧时间为10min,第二段煅烧时间为20min。将煅烧后的物料加入质量分数为0.5%的磷酸锌和质量分数为0.5%的锶铬黄后,用蒸汽动能磨在1.2Mpa蒸汽压力、磨腔内温度为180℃和分级机转速为1500rpm的条件下,进行超细粉碎和物理改性,制备复合颜填料B1(粒度分布如表4所示)。最后,对物理改性后的物料,通过三辊改性机,在110℃下,以质量分数为0.5%的硅烷偶联剂(KH560)和质量分数为0.5%的硅烷偶联剂(KH540)为改性剂,完成化学改性制得改性复合颜填料B2,其粒度分布如表4所示。
表3物料化学组成
表4不同填料粒度分布
实施例3
利用实施例1和实施例2中制备的改性复合颜填料A2和B2,在灰色防腐油漆中与常用的颜填料体系(炭黑+钛白体+碳酸钙,对照例)进行对比实验,涂料配方和性能对比如表5所示:
表5灰色防腐油漆配方、涂料制备工艺及性能对比
实施例4
利用实施例1和实施例2中制备的复合颜填料A1和B1,在灰色防腐水性涂料中与常用的颜填料体系(炭黑+钛白体+碳酸钙,对照例)进行对比实验。涂料配方和性能对比如表6所示:
表6灰色防腐水性涂料配方、涂料制备工艺及性能对比
实施例5
利用实施例1和实施例2中制备的复合颜填料A1和B1,在灰色粉末涂料中与常用的颜填料体系(炭黑+钛白体+碳酸钙,对照例)进行对比实验,涂料配方和性能对比如表7所示:
表7粉末涂料配方、涂料制备工艺及性能对比
通过上述对比分析可以明显看出,通过本发明所述的方法制备的复合颜填料,层间紧密结合一层稳定的碳类有机物,能够起到颜料和填料的双重作用,而且能够显著提高与机树脂的亲和性和分散性。与常用的颜填料体系相比,本发明所述的方法不仅能够降低涂料生产成本,而且能够显著提高涂料的储存、防腐、耐候性等性能。本发明所述的方法具有显著的环保意义和经济效益,市场前景广阔。
虽然本总体发明构思的一些实施例已被显示和说明,本领域普通技术人员将理解,在不背离本总体发明构思的原则和精神的情况下,可对这些实施例做出改变,本发明的范围以权利要求和它们的等同物限定。
Claims (12)
1.一种利用煤矸石制备涂料用复合颜填料的方法,所述方法包括:
预处理煤矸石,所述预处理煤矸石包括对煤矸石进行筛选和将筛选后的煤矸石进行粗粉碎;
对预处理后的煤矸石进行热处理,其中所述热处理包括两次煅烧所述煤矸石;
由超细粉碎设备执行热处理后的煤矸石的超细粉碎处理;
对超细粉碎处理后的煤矸石进行物理改性以得到复合颜填料;
对复合颜填料进行化学改性以得到改性复合颜填料,
其中由改性设备执行所述化学改性的步骤,所述改性设备包括三辊改性机、高速搅拌机和塔式改性机中的任一种或它们的任意组合,所述改性的温度范围为50-300℃,所述化学改性使用的改性剂为硅烷偶联剂、铝酸酯偶联剂、钛酸酯偶联剂、稀土偶联剂、脂肪酸及其盐、聚醇类物质、高级醇类中的任一种或它们的任意组合;
所述改性剂用量为超细粉碎后的煤矸石的粉体质量的0.01-25%;
其中,所述物理改性是将物理改性剂、粘合助剂和超细粉碎后的煤矸石一起喂入磨腔内粉碎并混合,所述物理改性剂包括红丹、锶铬黄、锌铬黄、钡铬黄、钙铬黄、磷酸盐、磷钼酸盐、三聚磷酸二氢铝、钼酸锌、硼酸锌、云母氧化铁、钛白粉、纳米氧化锌、石墨、群青、酞菁蓝、硫酸钡、铁红、铁黑中的任一种或更多种的混合物;所述物理改性剂为煤矸石量的0%-30%;
其中,所述两次煅烧煤矸石包括对煤矸石进行第一次煅烧和第二次煅烧,所述第一次煅烧的温度范围为100-200℃并且煅烧的时间范围为10-480分钟;
第二次煅烧的温度范围为200-1300℃并且煅烧的时间范围为10-480分钟。
2.根据权利要求1所述的方法,其中,
所述物理改性在超细粉碎设备的磨腔内完成。
3.根据权利要求1所述的方法,其中,
所述粘合助剂为硅酸钠、硅酸钾、双硅烷偶联剂中的任一种或它们的任意组合。
4.根据权利要求3所述的方法,其中,所述粘合助剂的质量分数为煤矸石量的0%-5%。
5.根据权利要求1所述的方法,其中,
所述超细粉碎设备包括环辊磨、机械磨、球磨机、气流磨、蒸汽磨、热空气气流磨、搅拌磨和砂磨机中的任一种或它们的任意组合。
6.根据权利要求5所述的方法,其中,
超细粉碎后的煤矸石的颗粒的粒度在800-12500目之间。
7.根据权利要求1所述的方法,其中,
所述煅烧煤矸石由煅烧设备在煅烧气氛下执行。
8.根据权利要求7所述的方法,其中,
所述煅烧设备包括隧道窑、内热式回转窑、外热式回转窑和推板窑中的任一种或它们的任意组合。
9.根据权利要求8所述的方法,其中,
所述煅烧气氛包括惰性气体保护气氛、还原气氛或弱氧化气氛。
10.根据权利要求1所述的方法,其中,
由粗碎设备将筛选后的煤矸石进行粗粉碎,所述粗碎设备包括锤式破碎机、圆锥式破碎机、反击式破碎机、辊压机、立磨和雷蒙磨中的任一种或它们的任意组合。
11.根据权利要求10所述的方法,其中,
在将煤矸石粗粉碎之后,所述方法还包括对粗粉碎的煤矸石进行磁选。
12.根据权利要求1-11中任一项所述的方法,其中,
所述涂料为粉末涂料、水性涂料或油漆。
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