JPS603039B2 - Fertilizer manufacturing method using municipal waste melting process - Google Patents
Fertilizer manufacturing method using municipal waste melting processInfo
- Publication number
- JPS603039B2 JPS603039B2 JP54093230A JP9323079A JPS603039B2 JP S603039 B2 JPS603039 B2 JP S603039B2 JP 54093230 A JP54093230 A JP 54093230A JP 9323079 A JP9323079 A JP 9323079A JP S603039 B2 JPS603039 B2 JP S603039B2
- Authority
- JP
- Japan
- Prior art keywords
- magnesium
- melting
- municipal waste
- fertilizer
- lime
- 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
Links
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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
Landscapes
- Fertilizers (AREA)
Description
【発明の詳細な説明】
本発明は、いわゆる都市ごみを高温溶融炉にて溶融処理
する際に排出されるスラツグを肥料として使用すること
ができるように溶融過程において処理する方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for treating slag discharged when municipal waste is melted in a high-temperature melting furnace during the melting process so that it can be used as fertilizer.
従来焼却処理に適さない都市ごみの処理方法として、高
温溶融炉での溶融処理が知られており、この溶融処理に
おいては、熱分解により発生した可燃性ガスは燃料とし
て再利用されているが、溶融された不燃物は空冷、また
は水砕後埋立材料あるいは道路建設用石材として利用さ
れる外有効な用途がない。Melting treatment in a high-temperature melting furnace is known as a method for treating municipal waste that is not suitable for conventional incineration, and in this melting treatment, flammable gas generated by thermal decomposition is reused as fuel. The molten noncombustible material has no effective use other than being air-cooled or used as landfill material or road construction stone after pulverization.
本発明は都市ごみの溶融処理に際して排出されるスラッ
グを肥料として使用できるように処理するもので、都市
ごみの溶融処理過程において例えばりん鉱石および水酸
化マグネシウムを投入し、出港を円滑に行い得るように
すると共にスラツグを肥料として利用しうるようにする
ものである。The present invention processes slag discharged during the melting process of municipal waste so that it can be used as fertilizer. For example, phosphate rock and magnesium hydroxide are input during the process of melting municipal waste to facilitate smooth departure from port. In addition, the slag can be used as fertilizer.
都市ごみの溶融処理過程において溶融される不燃物は主
として鉄および蓮酸であるが、このうち珪酸の粘性のた
めに溶融物の粘性が高められ、也蓬が滞り、連続処理が
困難になる。そこで一般に溶融物中の珪酸（Ｓｉ０２）
と石灰（Ｃａ○）とを反応させて溶融物の粘性を低くす
るため炭酸カルシウムが投入されているが、この結果排
出されるスラツグは、前記のように再利用の範囲が狭い
。本発明においては、溶融物の粘性を下げるために炭酸
カルシウムに代えて例えばりん鉱石および水酸化マグネ
シウムを投入し、アルカリ性溶融りん酸質肥料を得るの
である。なおここでりん鉱石に代えて他の、りん酸およ
び石灰を含有する物質、例えばいわゆる副産りん肥（湿
式りん酸液を精製する際に則産される肥料）等を用いる
ことができ、また水酸化マグネシウムに代えて、他のマ
グネシウム含有物、例えばマグネシアレンガ蓬、あるい
は高純度半導体用結晶シリコンの製造工程において副産
されるスラツグ等を用いることができる。本発明の実施
例を説明するに、従来市販の溶融りん酸苦±石灰（落成
りん肥）の成分は、石灰３０％前後、Ｍｇ０１５〜２０
％、Ｐ２０５２０％前後、Ｓｉ０２２５％前後で他に徴
量のＭｎ、Ｃａ、Ｚｎ、Ｂ等を含んでおり、その組成は
一般にＩＣａ０・ｍＭｇ０・Ｐ２Ｑ・ｎＳｉ０２で示さ
れ、１は原料であるりん鉱石の種類、成分によりほぼ一
定の値をとり、ｍ、ｎは蛇紋岩、珪砂の配合量により決
定される。そして、市販品では、ｍ＝２〜４、ｎ＝２〜
４の範囲であり、ごみの溶融物とりん鉱石、マグネシウ
ム含有物を混合溶融して前記と同様の組成のスラツグを
得ることができれば肥料として最適なものとなる。そこ
で、結果的に生成されるスラツグの組成が、ＩＣａ○・
ｍＭｇ０・Ｐ２０５・ｎＳｉ０２であると仮定し、これ
を肥料として利用しうるようにするため、Ｐ２０５１モ
ルを基準として、１≠４〜５・ｍ〒ｎ字２〜３となるよ
う各材料を添加する。即ち、りん酸を１モルとしてＭｇ
０／Ｓｉ０２主１となる量のマグネシウム含有物、りん
酸１モルに対して珪酸約３モル、マグネシウム約２．５
〜３モル、石灰約４〜５モルとなる量のりん鉱石および
マグネシウム含有物を夫々ごみの溶融物中の蓬酸の含有
量に応じて炉内に投入し、１２５ぴ○〜１３５ぴ０に加
熱する。ここで投入されるマグネシウムは、りん鉱石中
に含有されるりん酸の形態であるりん酸三石灰（Ｃａ３
（Ｐ０４）２）の柚溶率を高めると共に、溶融物の粘性
を低くするために有効である。実験例を説明するに、東
京都清掃局調査によればいわゆる容器収集ごみｌｔ中不
燃溶融物（焼却灰）の歩蟹は１５〜１７％で、この内珪
酸の含有率は約３３〜４０％、石灰の含有率は約１０〜
１５％であって、ごみｌｔ中に珪酸約４９〜５６ｋ９、
石灰約１５〜松ｋ９が含まれている。The non-combustible substances melted during the melting process of municipal waste are mainly iron and silicic acid, but the viscosity of silicic acid increases the viscosity of the melt, causing stagnation and making continuous processing difficult. Therefore, silicic acid (Si02) in the melt is generally
Calcium carbonate is added to reduce the viscosity of the melt by causing a reaction between the slag and lime (Ca○), but the slag discharged as a result of this process has a limited scope for reuse as described above. In the present invention, in place of calcium carbonate, for example, phosphate rock and magnesium hydroxide are added to reduce the viscosity of the molten product, thereby obtaining an alkaline molten phosphate fertilizer. Note that instead of phosphate rock, other substances containing phosphoric acid and lime, such as so-called by-product phosphorous fertilizer (fertilizer produced as a rule when refining wet phosphoric acid solution), etc. can be used, and Instead of magnesium hydroxide, other magnesium-containing materials such as magnesia brick or slag by-product in the manufacturing process of high-purity crystalline silicon for semiconductors can be used. To explain an example of the present invention, the components of conventional commercially available molten phosphoric acid bitter lime (sludge phosphorus fertilizer) are around 30% lime and 0.15 to 20% Mg.
%, P205, around 20%, Si02, around 25%, and also contains significant amounts of Mn, Ca, Zn, B, etc., and its composition is generally expressed as ICa0, mmMg0, P2Q, nSi02, where 1 is the raw material phosphate rock. The values are almost constant depending on the type and components, and m and n are determined by the amount of serpentine and silica sand mixed. For commercially available products, m=2~4, n=2~
4, and if a slag with the same composition as above can be obtained by mixing and melting the molten waste, phosphate ore, and magnesium-containing material, it will be optimal as a fertilizer. Therefore, the composition of the resulting slag is ICa○・
Assuming mMg0, P205, nSi02, in order to make it usable as fertilizer, each material is added so that 1≠4-5・m〒n-shaped 2-3 based on 1 mole of P205. . That is, Mg
0/Si02 Mainly 1 amount of magnesium-containing material, about 3 moles of silicic acid and about 2.5 magnesium per mole of phosphoric acid
Phosphate and magnesium-containing materials in amounts of ~3 moles and lime of approximately 4 to 5 moles were charged into the furnace depending on the content of oxalic acid in the melted waste, respectively, and the mixture was heated to 125 to 135 pi. Heat. The magnesium input here is tricalcium phosphate (Ca3), which is a form of phosphoric acid contained in phosphate rock.
(P04) This is effective for increasing the yuzu dissolution rate of 2) and lowering the viscosity of the melt. To explain an experimental example, according to a survey by the Tokyo Metropolitan Government Cleaning Bureau, the amount of non-flammable molten material (incineration ash) in so-called container collected garbage is 15-17%, and the silicic acid content of this is approximately 33-40%. , the lime content is about 10~
15%, about 49-56k9 silicic acid in the waste lt,
Contains about 15 lime to pine k9.
そこでごみｌｔを本発明の方法で処理した結果、不燃性
の溶融物（灰）（Ｃａ０１６０％、Ｓｉ０２３３．０％
含有）１３０ｋ９、となり、これにりん鉱石（Ｐ２０５
３４．０％、Ｃａ０５０．０％含有）１３５ｋ９、マグ
ネシウム含有スラッグ（Ｍや６０％含有）５５【９を投
入して１２５ぴ０〜１３５０ｑｏで溶融された結果、溶
融物を溶融炉外へ排出する、所謂出藻を滞りなく行える
良好な粘性をもたせることができ、計２５２ｋｇのスラ
ツグが出成された。前記出蓬を滞りなく行える粘性とは
、溶融炉の下側より内容物である溶融物が出口で凝固す
ることなく流れ出るに適した粘度であり、溶融物（蓬酸
物の多い鉱石類）は、蓬酸と石灰及びマグネシアのモル
比で粘Ｓｉ０２性の強弱が決まる。Therefore, as a result of processing the garbage lt using the method of the present invention, a non-flammable molten material (ash) (Ca0160%, Si0233.0%
Contains) 130k9, which contains phosphate rock (P205
34.0%, Ca050.0% content) 135k9, magnesium-containing slag (containing M and 60%) 55[9] were charged and melted at 125p0 to 1350qo, and the molten material was discharged to the outside of the melting furnace. A total of 252 kg of slag was produced, with a good viscosity for smooth algae production. The viscosity that allows smooth extraction is the viscosity that is suitable for the melted material contained in the melting furnace to flow out from the bottom of the melting furnace without solidifying at the outlet, and the molten material (ores with a large amount of melted oxide) is The strength of the viscous Si02 property is determined by the molar ratio of fluoric acid, lime, and magnesia.
粘性が強いと（Ｃａ。十Ｍｇ。）が高くスラッグ中のＰ
２０５の含有量は多いが溶融物の出蓬が困難であり「逆
に粘性が弱いことは（Ｃａき￥。筋ｇ。）が低い事であ
り溶融物の出蓬は容易であるが、Ｐ２０５の含有量は低
下する。溶融処理の目的は出淫を滞りなく行い、且つ排
出されるスラツグ中のＰ２０５の含有量を出来る限り高
品位に維持する事である。そして、上述のような鶴見点
より種々実験の結果、出律を滞りなく行うに必要な良好
な粘性を得るにはＩＣａ０・ｍＭｇ０・Ｐ２０５・ｎＳ
ｉ０２のモル比でＰ２ＱＩモル基準として、ｍ＝２〜４
、ｎ＝２〜４、１＝５〜６の配合割合にすることが最も
好ましいものであるとの実験結果を得た。そしてこれに
よって得られたスラッグは分析の結果、総Ｐ２０５１８
．２％、柚溶性Ｐ２０５１７．５％、総Ｃａ○概．７０
％、総Ｍｇ０１５．斑％、梅溶性Ｍｇ０１５．５２％、
総Ｓｉ０２２２．０％、可溶性Ｓｉ０２２１．７５％で
あり、他の例では、同様の条件でりん鉱石９０ｋ９、マ
グネシウム含有スラッグ４０ｋ９、を投入し、良好な粘
性をもたせることができ、計２雌ｋ９のスラツグが生成
され、このスラッグ中には総Ｐ２ＱＩＩ．２２％、拘溶
性Ｐ２０５１１．１８％、総Ｃａ０３３．７０％、総Ｍ
ｇ０１４．４０％、拘溶性Ｍｇ０１４．１０％、総Ｓｉ
Ｑ２３％、可溶性ＳｉＱ松％であり、これらは肥料とし
て有効に利用することができるものである。なお、現在
使用されている溶融炉の容量から、りん鉱石とマグネシ
ウム含有物の使用量を炭酸カルシウムの使用量の２〜２
．５倍の範囲に押えることが望ましいとされており、こ
の要請を撤し、いわゆる容器集収ごみから、前記の条件
のスラツグを得る場合には、使用するりん鉱石の成分が
、りん酸斑〜３５％、炭酸石灰蟹〜５０％のものであり
、マグネシウム含有物中のマグネシウムが５５〜６０％
のものであることが必要である。The higher the viscosity (Ca. 10 Mg.), the higher the P in the slug.
Although the content of P205 is high, it is difficult to pour out the molten product.On the other hand, the weak viscosity means that the viscosity is low, so it is easy to pour out the melt, but The content of P205 decreases.The purpose of the melting process is to perform the ejaculation smoothly and maintain the content of P205 in the discharged slag as high as possible. As a result of various experiments, ICa0・mMg0・P205・nS is required to obtain the good viscosity necessary for smooth discharge.
Based on the molar ratio of i02 and P2QI, m = 2 to 4
, n = 2 to 4, and 1 = 5 to 6, are the most preferred, according to experimental results. As a result of analysis, the resulting slug was found to be a total of P20,518
．． 2%, Yuzu Soluble P205 17.5%, Total Ca○ Approximately. 70
%, total Mg015. Plaque%, plum-soluble Mg015.52%,
Total Si022.0% and soluble Si0221.75%. In another example, 90k9 of phosphate rock and 40k9 magnesium-containing slag were added under the same conditions, and good viscosity could be obtained, resulting in a total of 2 female k9 A slug is created in which the total P2QII. 22%, Restrictive P205 11.18%, Total Ca033.70%, Total M
g014.40%, soluble Mg014.10%, total Si
Q23% and soluble SiQ pine%, which can be effectively used as fertilizer. In addition, based on the capacity of the melting furnace currently in use, the amount of phosphate rock and magnesium-containing materials used is 2 to 2 times the amount of calcium carbonate used.
．． It is said that it is desirable to keep the slag within the range of 5 times, and if this request is abolished and slag with the above conditions is obtained from so-called container collected garbage, the components of the phosphate rock used will be 35% %, carbonated lime crab ~ 50%, and magnesium in the magnesium-containing material is 55-60%
It is necessary that the
しかして溶融しているスラッグは水砕することにより砂
状となるのでこのまま肥料とすることができ、他に特別
の粉砕作業を必要としない。要するに本発明は、ごみの
溶融処理過程において、りん酸と石灰との含有物および
マグネシウム含有物を投入するから、石灰により溶融物
中の蓬酸による溶融物の高粘性を下げ、出溝を円滑に行
い、ごみの連続溶融処理が行えると共に、排出されるス
ラツグは水砕後肥料として有効に利用することができる
のである。Since the molten slag becomes sand-like by being pulverized, it can be used as fertilizer without any other special pulverization work. In short, in the present invention, a substance containing phosphoric acid and lime and a substance containing magnesium are added during the waste melting process, so that the lime reduces the high viscosity of the molten material due to oxalic acid in the molten material, and smoothes the guttering process. This allows for continuous melting of waste, and the discharged slag can be effectively used as fertilizer after pulverization.
Claims (1)
有物およびマグネシウム含有物を投入して溶融した後冷
却することを特徴とする都市ごみの溶融処理工程を利用
した肥料の製造方法。 ２ 前記ごみの溶融物が約３３〜４０％重量の珪酸を含
み、この珪酸量に対応して、珪酸、石灰、マグネシウム
、りん酸の各モル比が以下の如くなるように、ごみの溶
融物中にりん酸と石灰との含有物およびマグネシウム含
有物を投入して溶融した後冷却する特許請求の範囲第１
項に記載の都市ごみの溶融処理工程を利用した肥料の製
造方法。 スラツグの組成をｌＣａＯ・ｍＭｇＯ・Ｐ＿２Ｏ＿５・
ｎＳｉＯ＿２と仮定して、Ｐ＿２Ｏ＿３１モルを基準と
し、ｌ≒４〜５・ｍ≒ｎ≒２〜３。３ 前記りん酸と石
灰との含有物がりん鉱石である特許請求の範囲第１項又
は第２項に記載の都市ごみの溶融処理工程を利用した肥
料の製造方法。 ４ 前記りん酸と石灰との含有物が副産りん肥である特
許請求の範囲第１項又は第２項に記載の都市ごみの溶融
処理工程を利用した肥料の製造方法。 ５ 前記マグネシウム含有物が水産化マグネシウムであ
る特許請求の範囲第１項、または第２項、または第３項
に記載の都市ごみの溶融処理工程を利用した肥料の製造
方法。 ６ 前記マグネシウム含有物がマグネシアレンガ滓であ
る特許請求の範囲第１項、または第２項、または第３項
に記載の都市ごみの溶融処理工程を利用した肥料の製造
方法。 ７ 前記マグネシウム含有物が高純度半導体用結晶シリ
コンの製造工程において副産されるマグネシウム含有ス
ラツグである特許請求の範囲第１項、または第２項また
は第３項に記載の都市ごみの溶融処理工程を利用した肥
料の製造方法。[Scope of Claims] 1. A fertilizer using a municipal waste melting process characterized by adding a substance containing phosphoric acid and lime and a substance containing magnesium in the process of melting the waste, melting it, and then cooling it. manufacturing method. 2. The waste melt contains about 33 to 40% by weight of silicic acid, and the waste melt is prepared so that the molar ratios of silicic acid, lime, magnesium, and phosphoric acid are as follows, corresponding to the amount of silicic acid. Claim 1, in which a substance containing phosphoric acid and lime and a substance containing magnesium are put into the liquid, melted, and then cooled.
A method for producing fertilizer using the municipal waste melting process described in . The composition of the slag is lCaO・mMgO・P_2O_5・
Assuming nSiO_2, based on 1 mole of P_2O_3, l≒4-5・m≒n≒2-3.3 Claim 1 or 3, wherein the substance containing phosphoric acid and lime is phosphate rock. A method for producing fertilizer using the municipal waste melting process described in Section 2. 4. A method for producing fertilizer using the process of melting municipal waste according to claim 1 or 2, wherein the substance containing phosphoric acid and lime is by-product phosphorous fertilizer. 5. A method for producing fertilizer using the process of melting municipal waste according to claim 1, 2, or 3, wherein the magnesium-containing material is fish-produced magnesium. 6. A method for producing fertilizer using the process of melting municipal waste according to claim 1, 2, or 3, wherein the magnesium-containing material is magnesia brick slag. 7. The process of melting municipal waste according to claim 1, 2, or 3, wherein the magnesium-containing substance is a magnesium-containing slag that is a by-product in the manufacturing process of high-purity crystalline silicon for semiconductors. A method for producing fertilizer using
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54093230A JPS603039B2 (en) | 1979-07-24 | 1979-07-24 | Fertilizer manufacturing method using municipal waste melting process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54093230A JPS603039B2 (en) | 1979-07-24 | 1979-07-24 | Fertilizer manufacturing method using municipal waste melting process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5617993A JPS5617993A (en) | 1981-02-20 |
| JPS603039B2 true JPS603039B2 (en) | 1985-01-25 |
Family
ID=14076733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54093230A Expired JPS603039B2 (en) | 1979-07-24 | 1979-07-24 | Fertilizer manufacturing method using municipal waste melting process |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS603039B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH055012Y2 (en) * | 1987-01-05 | 1993-02-09 | ||
| JPH058134Y2 (en) * | 1986-01-31 | 1993-03-01 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09328384A (en) * | 1996-06-07 | 1997-12-22 | N K K Plant Kensetsu Kk | Production of sludge melt-solidified form |
| JP3490221B2 (en) * | 1996-07-18 | 2004-01-26 | Ｊｆｅプラント＆サービス株式会社 | Method for producing molten solid from fly ash generated during sludge incineration |
-
1979
- 1979-07-24 JP JP54093230A patent/JPS603039B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH058134Y2 (en) * | 1986-01-31 | 1993-03-01 | ||
| JPH055012Y2 (en) * | 1987-01-05 | 1993-02-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5617993A (en) | 1981-02-20 |
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