JPH0369855B2 - - Google Patents
Info
- Publication number
- JPH0369855B2 JPH0369855B2 JP62243630A JP24363087A JPH0369855B2 JP H0369855 B2 JPH0369855 B2 JP H0369855B2 JP 62243630 A JP62243630 A JP 62243630A JP 24363087 A JP24363087 A JP 24363087A JP H0369855 B2 JPH0369855 B2 JP H0369855B2
- Authority
- JP
- Japan
- Prior art keywords
- add
- slag
- fine powder
- sludge
- powder
- 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.)
- Expired - Lifetime
Links
- 239000000843 powder Substances 0.000 claims description 10
- 239000004568 cement Substances 0.000 claims description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 5
- 239000000920 calcium hydroxide Substances 0.000 claims description 5
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 5
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000004575 stone Substances 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 239000010801 sewage sludge Substances 0.000 claims description 3
- 239000012024 dehydrating agents Substances 0.000 claims description 2
- 229910052602 gypsum Inorganic materials 0.000 claims description 2
- 239000010440 gypsum Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000010802 sludge Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000002956 ash Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Treatment Of Sludge (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
下水汚泥土焼却灰をセメント化する方法であ
る。[Detailed description of the invention] (a) Industrial application field This is a method for turning sewage sludge soil incineration ash into cement.
(ロ) 従来の技術
従来、下水道の終末処理場において大量に集積
された汚泥土は、これに消石灰を添加して焼却し
灰化させて、海中や窪地などに廃棄して来た。(b) Conventional technology Conventionally, sludge accumulated in large quantities at sewage treatment plants has been incinerated by adding slaked lime to turn it into ashes, and disposed of in the sea or in depressions.
(ハ) 発明が解決しようとする問題点
上記の焼却添加剤である消石灰はコストが高く
ついた。(c) Problems to be solved by the invention Slaked lime, which is the above-mentioned incineration additive, is expensive.
従つて上記の廃棄される大量の汚泥土を有益に
活用し且つ焼却添加剤のコストを低下させ、土木
工事に利用する物質を提供しようとするものであ
る。 Therefore, the present invention aims to make effective use of the large amount of discarded sludge, reduce the cost of incineration additives, and provide a material that can be used in civil engineering works.
(ニ) 問題点を解決するための手段
そこで製鉄に際し生ずる残滓鉱物即ち鉱滓（ス
ラブ）は、これにアルカリ又は硫酸塩類を添加す
ると、水中においても硬化する所謂水硬性を有す
る。(d) Means to solve the problem The residual minerals, ie, slag (slab) produced during iron manufacturing have a so-called hydraulic property that hardens even in water when alkali or sulfates are added to it.
また上記の汚泥焼却灰は、一般にPH８〜９の弱
アルカリであるから、これに鉱滓を添加すれば水
硬性が得られることが判明した。 Furthermore, since the above-mentioned sludge incineration ash is generally a weak alkali with a pH of 8 to 9, it has been found that hydraulic properties can be obtained by adding slag to it.
従つて酸化カルシウム分を多く含んだ鉱滓また
は石粉を汚泥土中の粘土質分に添加すれば、普通
セメントの性分に近い物質が得られる。 Therefore, if slag or stone powder containing a large amount of calcium oxide is added to the clayey content of sludge soil, a substance with properties close to that of ordinary cement can be obtained.
そこで焼却添加材として消石灰の価格の1/3乃
至1/4に相当する安価な鉱滓粉末と炭酸カルシウ
ム石粉とを選択した。 Therefore, we selected inexpensive slag powder and calcium carbonate stone powder, which are equivalent to 1/3 to 1/4 of the price of slaked lime, as incineration additives.
よつて上記の廃棄される汚泥土から有益な再生
物質として水硬性低強度セメントを製造すること
ができる。 Hydraulic low-strength cement can thus be produced from the waste sludge as a useful recycled material.
(ホ) 作用
本願の水硬性低強度セメントに対し蒸留水45％
を添加し、軟練状態を作出させた型枠に流入して
24時間空中に載置した後、21℃の水中に入れて養
生した後、その圧縮強度を測定した結果下記の通
りである。(E) Effect Distilled water 45% for the hydraulic low strength cement of the present application.
was added and flowed into the formwork to create a softened state.
After being placed in the air for 24 hours and then curing in water at 21°C, the compressive strength was measured and the results are as follows.
１週間後 14Kg／cm2
４週間後 42Kg／cm2
８週間後 50Kg／cm2
(ヘ) 実施例
炭酸カルシウム石粉１〜４ｇ及び消石灰0.5ｇ
を汚泥土水100CC（実質汚泥量２ｇ）に各添加混
合し、これに脱水剤として塩化第二鉄５mgを添加
し脱水して乾燥させた後、電気炉により１時間
800゜〜1200℃で焼成して焼却灰微粉を生成した。After 1 week 14Kg/cm 2 After 4 weeks 42Kg/cm 2 After 8 weeks 50Kg/cm 2 (f) Example Calcium carbonate stone powder 1-4g and slaked lime 0.5g
were added to 100 CC of sludge soil water (actual amount of sludge 2 g), 5 mg of ferric chloride was added as a dehydrating agent, dehydrated and dried, and then heated in an electric furnace for 1 hour.
It was fired at 800° to 1200°C to produce fine powder of incinerated ash.
次に石膏３〜５％を添加した未焼却の鉱滓微粉
末（0.074mm以下の粒径）の10〜30％を上記の焼
却灰微粉末に混合して、水硬性低強度セメントを
生成した。 Next, 10 to 30% of unburned fine slag powder (particle size of 0.074 mm or less) to which 3 to 5% of gypsum was added was mixed with the above fine powder of incinerated ash to produce a hydraulic low strength cement.
(ホ) 発明の効果
本願の水硬性低強度セメントは、廃棄される大
量の下水汚泥土より得られる画期的な再生物質で
あつて、然も従来よりも低コストの焼却添加材を
利用する長所がある。(e) Effects of the invention The hydraulic low-strength cement of the present application is an innovative recycled material obtained from a large amount of discarded sewage sludge soil, and uses incineration additives that are lower in cost than conventional ones. It has its advantages.
本願のセメントは軟質土壌の改良硬化材とし
て、また道路路盤材の強化補助材料として広く土
木工事に大量に供給することができる。 The cement of the present application can be supplied in large quantities to a wide range of civil engineering works as an improvement hardening material for soft soil and as an auxiliary material for reinforcing road base materials.
Claims (1)
水に各添加混合し、これに脱水剤を添加し脱水し
て乾燥させた後、電気炉で焼成して焼却灰微粉末
を生成し、これに石膏を添加した鉱滓微粉末を混
合して水硬性低強度セメントを製造する方法。1. Add and mix calcium carbonate stone powder and slaked lime to sewage sludge soil water, add a dehydrating agent to this, dehydrate it and dry it, then burn it in an electric furnace to produce a fine powder of incinerated ash, and add gypsum to this. A method of manufacturing hydraulic low-strength cement by mixing added fine powder of slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62243630A JPH02141443A (en) | 1987-09-30 | 1987-09-30 | Production of low-strength hydraulic cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62243630A JPH02141443A (en) | 1987-09-30 | 1987-09-30 | Production of low-strength hydraulic cement |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58141935A Division JPS6033237A (en) | 1983-08-04 | 1983-08-04 | Use of sewage sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02141443A JPH02141443A (en) | 1990-05-30 |
| JPH0369855B2 true JPH0369855B2 (en) | 1991-11-05 |
Family
ID=17106680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62243630A Granted JPH02141443A (en) | 1987-09-30 | 1987-09-30 | Production of low-strength hydraulic cement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02141443A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674781A (en) * | 2012-05-18 | 2012-09-19 | 武汉钢铁(集团)公司 | Heat-stewed steel slag building construction dry powder and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330275A (en) * | 2019-07-03 | 2019-10-15 | 乐山市瑞祯建材有限公司 | It is a kind of using industrial residue industrial silt be raw material distribution |
-
1987
- 1987-09-30 JP JP62243630A patent/JPH02141443A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674781A (en) * | 2012-05-18 | 2012-09-19 | 武汉钢铁(集团)公司 | Heat-stewed steel slag building construction dry powder and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02141443A (en) | 1990-05-30 |
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