JPH02153702A - Manufacture of hardened gypsum body - Google Patents
Manufacture of hardened gypsum bodyInfo
- Publication number
- JPH02153702A JPH02153702A JP30697088A JP30697088A JPH02153702A JP H02153702 A JPH02153702 A JP H02153702A JP 30697088 A JP30697088 A JP 30697088A JP 30697088 A JP30697088 A JP 30697088A JP H02153702 A JPH02153702 A JP H02153702A
- Authority
- JP
- Japan
- Prior art keywords
- water
- gypsum
- stack
- gypsum dihydrate
- pressed
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 239000010440 gypsum Substances 0.000 title claims abstract description 49
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 49
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 150000004683 dihydrates Chemical class 0.000 claims abstract description 31
- 239000000843 powder Substances 0.000 claims abstract description 11
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 239000010883 coal ash Substances 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 32
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 238000006477 desulfuration reaction Methods 0.000 abstract description 7
- 230000023556 desulfurization Effects 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 6
- 238000001035 drying Methods 0.000 abstract description 5
- 239000011505 plaster Substances 0.000 abstract description 5
- 235000019738 Limestone Nutrition 0.000 abstract description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 4
- 239000013078 crystal Substances 0.000 abstract description 4
- 239000006028 limestone Substances 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 4
- 239000002002 slurry Substances 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 238000003860 storage Methods 0.000 abstract description 3
- 238000009694 cold isostatic pressing Methods 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 abstract description 2
- 230000001464 adherent effect Effects 0.000 abstract 2
- 239000000047 product Substances 0.000 description 20
- 238000000465 moulding Methods 0.000 description 9
- 238000002425 crystallisation Methods 0.000 description 6
- 230000008025 crystallization Effects 0.000 description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000004898 kneading Methods 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- 239000004579 marble Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910000480 nickel oxide Inorganic materials 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 2
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229930091051 Arenine Natural products 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229920000426 Microplastic Polymers 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229940125898 compound 5 Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- CEQFOVLGLXCDCX-WUKNDPDISA-N methyl red Chemical compound C1=CC(N(C)C)=CC=C1\N=N\C1=CC=CC=C1C(O)=O CEQFOVLGLXCDCX-WUKNDPDISA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000001044 red dye Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、天然石膏や排煙脱硫設備で副生ずる排脱石膏
などの２水石青粉末を加圧成型して大理石風の建築用硬
化体を製造する方法に関すものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is a hardened marble-like building material made by pressure-molding dihydrate blue powder such as natural gypsum or de-gypsum produced by-product in flue gas desulfurization equipment. The invention relates to a method of manufacturing.
石膏硬化体を製造する方法はよく知られ九ところであり
、建築用石膏ボードや模型の製作に広く利用されている
が、２水石膏は水利硬化性をもたないので一旦加熱処理
して半水石膏や無水石膏を裂遺し、これに水を加えて硬
化体となす方法が採用されている。２水石膏を直接硬化
させる方法は実用に供されていない。There are nine well-known methods for producing hardened gypsum, and it is widely used in the production of architectural plasterboards and models. However, since dihydrate gypsum does not have water-curing properties, it must be heat-treated first to make it half-hydrated. The method used is to leave gypsum or anhydrite in pieces and add water to it to form a hardened material. A method of directly curing dihydrate gypsum has not been put to practical use.
石膏硬化体を製造するに際し、従来は焼石膏の如き、加
熱処理したものの水利硬化反応を利用したので
■ 加熱処理の設備費と運転費が嵩む
■ 焼石膏の輸送と保管に湿気防止策が必要である
■ 水和硬化体を成型するのに混練設備が必要である
■ 大理石風模様のある風格のある建築用硬化体ができ
ない
等の問題があった。Conventionally, when producing hardened gypsum, the water curing reaction of heat-treated materials such as calcined gypsum was used.■ Heat treatment equipment costs and operating costs are high.■ Moisture prevention measures are required for transportation and storage of calcined gypsum. ■ Kneading equipment is required to mold the hydrated cured product ■ There were problems such as the difficulty of producing a dignified architectural cured product with a marble-like pattern.
本発明は上記技術水準に鑑み、排脱石膏に代表される２
水石青粉体ｙｋ直接加圧成型して大理石風の建築用硬化
体を製造する方法を提供しょうとするものである。In view of the above-mentioned technical level, the present invention has developed two
It is an object of the present invention to provide a method for producing a marble-like hardened body for architectural use by directly press-molding waterstone blue powder yk.
本発明は２水石青粉体を１０００ ｋｌ／ａｒｔ２以上
の圧力で加圧成型することを特徴とする石膏硬化体の製
造方法である。The present invention is a method for producing a hardened gypsum body, which is characterized in that dihydrate blue powder is pressure-molded at a pressure of 1000 kl/art2 or more.
すなわち、本発明は２水石膏粉体を冷間等方圧プレス（
ｃ工ｐ）の如き加圧成型装置に封入し１ｏ ｏ ｏ ｋ
ｙ／ｃＷ？以上で加圧成型することによって石膏硬化体
を得るものである。That is, the present invention applies dihydrate gypsum powder to cold isostatic pressing (
1o o o k
y/cW? A hardened gypsum body is obtained by pressure molding the above.
又、２水石脅粉体に色のある金属酸化物、鉱物、石炭灰
、プラスチック等を適倹、好ましくは１１〜５ ｖｔ％
添加混合し加圧成型装置にて１０００ｋｐ／ｉ以上で加
圧成型し、洩々の色調と模様を呈し九大理石風の硬化体
を得るものである。In addition, colored metal oxides, minerals, coal ash, plastics, etc. are added to the dihydrate powder, preferably 11 to 5 vt%.
The materials are added and mixed and then pressure molded using a pressure molding device at a pressure of 1000 kp/i or more to obtain a cured product that exhibits a clear color tone and pattern and resembles a nine marble marble.
２水石青が１ ” Ｏｋｙ／ ｃｍ２以上の加圧によっ
て大理石風の硬化体になる機構は明らかでないが、半水
石膏や無水石膏の粉末を同様に加圧成型しても大理石風
の硬化体が得られず、もろいものになることから２水の
結晶水が硬化に重要な役割を果たしているものと考える
。強力な圧力によって結晶水が遊離しその結晶水にＣａ
とＳＯ４の各イオンが溶解し、常圧に戻した時に再
結晶するため、強固な硬化体になると推察する。The mechanism by which dihydrate blue becomes a marble-like hardened product when pressure is applied to 1 ” Oky/cm2 or more is not clear, but even if hemihydrate gypsum or anhydrite powder is pressure-molded in the same way, a marble-like hardened product is not formed. We believe that dihydric crystallization water plays an important role in hardening.The strong pressure liberates the crystallization water, and the crystallization water contains Ca.
It is presumed that each ion of SO4 and SO4 dissolves and recrystallizes when the pressure is returned to normal, resulting in a strong hardened product.
又硬化体が大理石風の色模様を呈するのは加圧時に遊離
した結晶水が色調を呈する微量成分に作用しているため
と考える。It is also believed that the reason why the cured product exhibits a marble-like color pattern is that the water of crystallization liberated during pressurization acts on the trace components that exhibit the color tone.
原料の２水石膏は排脱石膏とリン酸石膏が我国で生産さ
れる主なものであるが、これらの２水石膏はケイ素、鉄
、マグネシウム、アルぐ二りム、マンガン、リン、ナト
リウム、銅、フッ素、塩素、ニッケル、鉛、亜鉛、バナ
ジウム、クロム、チタンを微量成分として含有しておシ
これら成分が大理石風の模様に結びついている。The main raw materials for dihydrate gypsum produced in Japan are dehydrated gypsum and phosphate gypsum, but these dihydrate gypsum contain silicon, iron, magnesium, aluminum, manganese, phosphorus, sodium, It contains trace amounts of copper, fluorine, chlorine, nickel, lead, zinc, vanadium, chromium, and titanium, and these elements are combined into a marble-like pattern.
従って、２水石膏に更に金属酸化物や鉱物、石炭灰、プ
ラスチック等を添加混合することによって、加圧成型硬
化体の色調と模様は自在に変わる。Therefore, by further adding and mixing metal oxides, minerals, coal ash, plastics, etc. to dihydrate gypsum, the color tone and pattern of the pressure-molded cured product can be freely changed.
原料の２水石膏として例えば我国で年間１８０万トン生
産されている排脱石膏を利用する七した場合の２水石膏
の性状てついて説明する。The properties of dihydrate gypsum in the case of using, for example, expelled gypsum, which is produced in Japan at 1.8 million tons per year, as the raw material dihydrate gypsum will be explained.
火力発電所のボイラ排ガスは湿式石灰・石膏性排煙脱硫
装置で処理されるのが一般的でる広石灰岩を粉砕した炭
酸カルシウムを脱硫剤として含むスラリーで排ガスを洗
浄し、５０２ｔ−２水石膏として回収する。この排脱石
膏は未反応の残留炭酸カルシウムと元々石灰岩に含まれ
ている不純物（代表的なものはＭｇ、 Ｆｅ、 Ａ／、
８１゜Ｍｎ、 ｐ、 ｚｎの各化合物を含む）と排ガ
スからもたらされるダスト（代表的なものは石炭灰であ
シ、これは８１． Ｆｅ、 Ａ／、 Ｃａ、 Ｎａ、
Ｍｇ、に、 Ｃｒ、 Ｆ。Boiler exhaust gas from thermal power plants is generally treated with a wet lime/gypsum flue gas desulfurization system.The exhaust gas is cleaned with a slurry containing calcium carbonate as a desulfurization agent made by crushing broad limestone, and then treated as 502t-2 water gypsum. to recover. This removed gypsum contains unreacted residual calcium carbonate and impurities originally contained in limestone (typical examples are Mg, Fe, A/,
dust (typically coal ash, which contains 81. Fe, A/, Ca, Na,
Mg, Cr, F.
Ｐｂ、 Ｔｉ の各化合物を含み、重油ダストはＮ、
Ｖ。Contains Pb and Ti compounds, heavy oil dust contains N,
V.
Ｎｉ、 Ｃｒ、 Ｃｕ の各化合物を含む）を含有し
ている。(including Ni, Cr, and Cu compounds).
更に排脱石膏は平均粒径として２０μから１００μ程度
の２水石膏結晶の水スラリーを遠心分離して回収される
から１０〜５ ｗｔ％の付着水をもっている。仁の付着
水はＣｒ”’、 Ｆ”、 ８２０６ＮＯ−ｃａ”、 Ｍ
ｇ２＋、 ｕａ＋、 Ｂｏ：′″ の微量の可溶化５を
合物を含有しておシ、これら化合物も排脱石膏に付着水
と共に含まれることとなる。この排脱石膏（２水石膏）
ケーキをそのまま加圧成型すると付着水がしみ出して来
るからこれを除去する必要がある。１Ｑ ００ ｋｊｌ
／眞２以上２以上成型では付着水の通路が加圧成型硬化
物に残留しクラックの原因となるので、加圧成型する前
に付着水を飛ばす目的で十分に乾燥する８袂がある。Furthermore, since the removed gypsum is recovered by centrifuging a water slurry of dihydrate gypsum crystals with an average particle size of about 20 to 100 microns, it has 10 to 5 wt% of attached water. Adhesive water on kernels is Cr”', F”, 8206NO-ca”, M
g2+, ua+, Bo:''' contains a trace amount of solubilized compound 5, and these compounds are also included in the removed gypsum together with the attached water.This removed gypsum (dihydrate gypsum)
If the cake is pressure-molded as is, adhering water will seep out, so this must be removed. 1Q 00 kjl
/ True 2 or more When molding 2 or more, the passage of adhered water remains in the pressure-molded cured product and causes cracks, so there are 8 layers that are sufficiently dried to remove the adhered water before pressure molding.
付着水の乾燥時に結晶水を失わないようにすることが肝
要であシ乾燥温度’ｉ４０５５０ｔ：’に保持しなけれ
ばならない。It is important not to lose the water of crystallization during drying of the adhering water, and the drying temperature must be maintained at 'i40550t:'.
結晶水け６０Ｃ以上に加温すると飛び始めるが、結晶水
を失うことは加圧成型硬化体の強度と大理石風の模様を
失うことにつながるので原料２水石膏の付着水除去条件
も主要事項でおる。Crystal water begins to fly when heated above 60C, but loss of crystal water leads to loss of strength and marble-like pattern of the pressure-molded hardened product, so conditions for removing water adhered to the raw material dihydrate gypsum are also important. is.
石膏硬化体を製造するのに、付着水は不要で結晶水が不
可欠との新知見に基づいて本発明を成し得たものである
が付着水を無くする方法は乾燥に限定されるものではな
く、例えば付着水と結合する半水石膏を混合した後、加
圧成型することももちろん可能である。かかる場合は半
水石膏の２水への水利反応を加圧成型を完了するまで、
終結させるようにし １．０００ ｋｇ／（１１１’以
上の加圧によって遊離水がしみ出すことのないようにす
ることが重要である。The present invention was made based on the new knowledge that adhesion water is unnecessary and crystallization water is indispensable to produce a hardened gypsum body, but the method for eliminating adhesion water is not limited to drying. For example, it is also possible to mix gypsum hemihydrate, which binds to adhered water, and then press-mold the mixture. In such a case, the water utilization reaction of hemihydrate gypsum to dihydrate should be carried out until pressure molding is completed.
It is important to ensure that free water does not seep out due to pressurization of 1.000 kg/(111' or more).
本発明の具体的な実施例を以下に説明する。Specific examples of the present invention will be described below.
〔実施例１〕
排煙脱硫設備よシ副生された排脱２水石膏をＳＯＣで約
−昼夜乾燥し、付着水を完全に除去したもの約４２０２
をＣＩ Ｐ （Ｃｏ１ｄ ｌ５ｏｒａｔｅｌＰｒｅｓｓ
）なる加圧成型装置に入れて巾４０１ Ｘ高さ４０１
Ｘ長さ１３（至）の硬化体を作った。この時の加圧力
は、ｓ ｏ ｏ ｏ ｋｇ７ｒｗ’であった。[Example 1] Exhausted dihydrate gypsum produced as a by-product from flue gas desulfurization equipment was dried at SOC day and night to completely remove attached water. Approximately 4202
CI P (Co1d l5oratelPress
) into a pressure molding machine with a width of 401 x height of 401
A cured body with a length of 13 (up to) was made. The pressing force at this time was soooo kg7rw'.
得られ九硬化体は、ひび割れはなく強度も充分なもので
あった。この硬化体を電動のこで４０１Ｘ４０１Ｘ１０
１Ｓに切断し、目の細かい紙ヤスリで表面を研磨したと
ころその面に大理石風の美観のある模様が露呈した。The obtained nine-cured product had no cracks and had sufficient strength. Cut this hardened material with an electric saw to 401x401x10
When it was cut into 1S pieces and the surface was polished with fine sandpaper, a beautiful marble-like pattern was exposed on the surface.
〔実施例２〕
実施例１と同じ方法で乾燥した排脱２水石膏約４００ｊ
’に酸化ニッケルの粉末約２０９ｔ−加えた以外は、全
て実施例１に同じ方法で硬化体を得た。この硬化体は、
実施例１の大理石風の模様に酸化ニッケルの緑色模様の
加わった美観のある表面であった。[Example 2] Approximately 400j of expelled dihydrate gypsum dried in the same manner as in Example 1
A cured body was obtained in the same manner as in Example 1, except that about 209 tons of nickel oxide powder was added to '. This hardened body is
The surface had a beautiful appearance, with the marble-like pattern of Example 1 added with the green pattern of nickel oxide.
〔実施例５〕
実施例１に同じ方法で乾燥した排脱２水石膏約４００Ｊ
ｌに酸化第二鉄の粉末約２０９を加え九以外は全て実施
例１に同じ方法によって硬化体を得た。この硬化体は、
実施例１の大理石風模様、に酸化第二鉄の褐色模様の加
わった美観のある表面であった。[Example 5] Approximately 400 J of expelled dihydrate gypsum dried in the same manner as in Example 1
A cured product was obtained by the same method as in Example 1 except for adding about 20% of ferric oxide powder to 1 and 9. This hardened body is
The marble-like pattern of Example 1 was added with a brown pattern of ferric oxide to give a beautiful surface.
〔実施例４〕
実施例１に同じ方法で乾燥した排脱２水石膏約４００１
に赤色の染料粉末（メチルレッド）約２０．９を加えた
以外は全て実施例１に同じ方法によって硬化体を得た。[Example 4] Excavated dihydrate gypsum of about 4001 ml was dried in the same manner as in Example 1.
A cured product was obtained in the same manner as in Example 1 except that about 20.9 g of red dye powder (methyl red) was added to the sample.
この硬化体は、実施例１の大理石風の模様に染料の赤色
模様の加わつ九美観ある表面であつ九。This cured product has a beautiful surface with the red pattern of the dye added to the marble-like pattern of Example 1.
〔実施例５〕
実施例１に同じ方法で乾燥した排脱２水石膏約４００９
に、粒径約３ｍの青色のプラスチックペレット（着色塩
化ビニルベレット）を約１０．９加えた以外は、全て、
実施例１に同じ方法によって硬化体を得た。この硬化体
は、実施例１の大理石風の模様にプラスチックの青色模
様の加わった美観のある表面であった。[Example 5] Excavated dihydrate gypsum of about 4009 ml was dried in the same manner as in Example 1.
All except for adding about 10.9 g of blue plastic pellets (colored vinyl chloride pellets) with a particle size of about 3 m to
A cured product was obtained by the same method as in Example 1. This cured product had a beautiful surface with a blue plastic pattern added to the marble-like pattern of Example 1.
なお、排脱２水石膏ケーキ４２０＆を乾燥しないで実施
例１に同じ方法で硬化体を作ったところ、ひび割れが多
く、電動のこで切断すると、型がくずれてしまう強度の
弱いものであった。In addition, when a cured product was made using the same method as in Example 1 without drying the expelled dihydrate gypsum cake 420&, it had many cracks and was so weak that the mold collapsed when cut with an electric saw. .
以上のとおり、排脱２水石膏を乾燥して付層水分を除去
したのち、これを加圧成型することによって大理石風の
美観のある模様を有する硬化体ができる。また、乾燥し
た排脱石膏に、本実施例のＮｉ、 Ｆｅ 酸化物、さ
らにはその他の金属化合物、染料、プラスチック等の粉
体、又は粉体を加えることによって、大理石風の美観の
中に添加物特有の色模様を有する硬化体をつくることが
できる。さらには以上の添加粉体又は粒体を使用するに
あたシ、その粉粒体の大きさ、形、添加量、および排脱
２水石膏との混ぜ具合等によって、さまざまな色模様を
自由につくシ出すことができる。As described above, after the expelled dihydrate gypsum is dried to remove the layered moisture, it is pressure molded to produce a cured product having an aesthetic marble-like pattern. In addition, by adding the Ni and Fe oxides of this example, as well as powders of other metal compounds, dyes, plastics, etc., to the dried removed gypsum, it can be added to create a beautiful marble-like appearance. It is possible to create a cured product with a color pattern unique to the object. Furthermore, when using the above-mentioned additive powders or granules, various color patterns can be freely created depending on the size, shape, amount added, and mixing condition with the excreted dihydrate gypsum. You can get the sticky stuff out.
以上説明したとおシ、本発明は、排脱石膏に代表される
２水石青粉体を直接加圧成型して大理石風の建築用硬化
体をつくるので、従来の焼石膏を使用する硬化体の製造
方法と異な９次の点で効果的である。■２２水膏の加熱
処理の設備費と、運転費が少なくてする。■焼石膏の如
き輸送と保管時の湿気防止が不要である。■硬化体の製
造にあたシ混練設備が不要である。■大理石風模様のあ
る風格のある建築用硬化体ができる。As explained above, the present invention creates a marble-like architectural hardened body by directly press-molding dihydrate blue powder, which is typified by expelled gypsum. It is effective in nine points different from the manufacturing method. ■Equipment costs and operating costs for heat treatment of 22 plaster are reduced. ■There is no need to prevent moisture during transportation and storage, as with plaster of Paris. ■No additional kneading equipment is required for producing the cured product. ■Produces a stately hardened material for architectural use with a marble-like pattern.
Claims (2)
力で加圧成型することを特徴とする石膏硬化体の製造方
法。(1) A method for producing a hardened gypsum body, which comprises pressurizing dihydrate gypsum powder at a pressure of 1000 kg/cm^2 or more.
プラスチック等を添加してなるものである特許請求の範
囲（１）記載の石膏硬化体の製造方法。(2) Dihydrate gypsum powder contains coal ash, metal oxides, various minerals,
A method for producing a hardened gypsum body according to claim (1), which comprises adding a plastic or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63306970A JP2596994B2 (en) | 1988-12-06 | 1988-12-06 | Method for producing hardened gypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63306970A JP2596994B2 (en) | 1988-12-06 | 1988-12-06 | Method for producing hardened gypsum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02153702A true JPH02153702A (en) | 1990-06-13 |
| JP2596994B2 JP2596994B2 (en) | 1997-04-02 |
Family
ID=17963458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63306970A Expired - Lifetime JP2596994B2 (en) | 1988-12-06 | 1988-12-06 | Method for producing hardened gypsum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2596994B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115304340A (en) * | 2021-05-08 | 2022-11-08 | 福建龙净脱硫脱硝工程有限公司 | Plastering mortar and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4931012A (en) * | 1972-07-24 | 1974-03-20 | ||
| JPS5143480A (en) * | 1974-10-09 | 1976-04-14 | Akio Nagayoshi | Amishiitono seizohoho |
| JPS5145120A (en) * | 1974-08-09 | 1976-04-17 | Unie Van Kunstmestfab Bv | |
| JPS5287418A (en) * | 1976-01-17 | 1977-07-21 | Kogyo Gijutsuin | Production method of setting material from gypsum dihydrate |
| JPS52141835A (en) * | 1976-05-08 | 1977-11-26 | Stamicarbon | Production method of molded product from calcium sulfate dihydrate |
| JPS56113407A (en) * | 1980-02-15 | 1981-09-07 | Tohoku Electric Power Co | Manufacture of pressure molding resin building material |
| JPS56160352A (en) * | 1980-05-13 | 1981-12-10 | Tohoku Electric Power Co | Manufacture of pressure molded gypsum construction material |
-
1988
- 1988-12-06 JP JP63306970A patent/JP2596994B2/en not_active Expired - Lifetime
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4931012A (en) * | 1972-07-24 | 1974-03-20 | ||
| JPS5145120A (en) * | 1974-08-09 | 1976-04-17 | Unie Van Kunstmestfab Bv | |
| JPS5143480A (en) * | 1974-10-09 | 1976-04-14 | Akio Nagayoshi | Amishiitono seizohoho |
| JPS5287418A (en) * | 1976-01-17 | 1977-07-21 | Kogyo Gijutsuin | Production method of setting material from gypsum dihydrate |
| JPS52141835A (en) * | 1976-05-08 | 1977-11-26 | Stamicarbon | Production method of molded product from calcium sulfate dihydrate |
| JPS56113407A (en) * | 1980-02-15 | 1981-09-07 | Tohoku Electric Power Co | Manufacture of pressure molding resin building material |
| JPS56160352A (en) * | 1980-05-13 | 1981-12-10 | Tohoku Electric Power Co | Manufacture of pressure molded gypsum construction material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115304340A (en) * | 2021-05-08 | 2022-11-08 | 福建龙净脱硫脱硝工程有限公司 | Plastering mortar and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2596994B2 (en) | 1997-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106007430B (en) | A kind of copper ashes base iron system oxalate chemical bonding material and application thereof | |
| CN108178653A (en) | It is a kind of to utilize manganese slag sintered porous brick and preparation method thereof | |
| KR20180020371A (en) | Concrete dressed brick and making method of it | |
| CN109133683A (en) | A kind of gangue is comprehensive integrated to utilize method | |
| JPH02153702A (en) | Manufacture of hardened gypsum body | |
| JP7208077B2 (en) | Method for producing solidified coal ash | |
| EP0045096B1 (en) | Method of producing hydrothermally hardened granules | |
| EP0729926A1 (en) | Process for producing gypsum building elements and gypsum building elements produced by said process | |
| JPH07124535A (en) | Curing/coagulating agent of incineration ash and production of building material | |
| JPS5951504B2 (en) | Heat-curing cement composition | |
| JP2004041889A (en) | Fluorine adsorbent and method of treating fluorine in water | |
| JPH03232783A (en) | Production of water-permeable paving block and water-permeable paving block | |
| US1248455A (en) | Calcareous cementitious material and process of making the same. | |
| Hemming | Plastics and molded electrical insulation | |
| JPH0214888A (en) | Production of porous material with fly ash as raw material | |
| CN107098612A (en) | A kind of magnesium system oxalic acid salt cement | |
| US505082A (en) | Coating or plastic | |
| SU1132485A1 (en) | Method of producing gypsum articles | |
| US2135542A (en) | Utilization of colliery shale and other waste bituminous shales in the manufacture of cementitious products | |
| US800606A (en) | Process of making plaster or mortar. | |
| JPS60137496A (en) | Caking material for silt | |
| Amonovich et al. | Improvement of Technology of Gypsum Production Raw Materials and Products in Production | |
| JPS60260458A (en) | Hydraulic formed body from volcanic soil as main component | |
| KR890001995B1 (en) | Methods for producing the construction materials using abriquct ash | |
| JPH02107548A (en) | Artificial stone and production thereof |