CN105420548A - Lead-calcium alloy production method - Google Patents

Lead-calcium alloy production method Download PDF

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Publication number
CN105420548A
CN105420548A CN201510984320.XA CN201510984320A CN105420548A CN 105420548 A CN105420548 A CN 105420548A CN 201510984320 A CN201510984320 A CN 201510984320A CN 105420548 A CN105420548 A CN 105420548A
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Prior art keywords
lead
calcium
alloy
aluminium
production
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CN105420548B (en
Inventor
黄健
苏向东
杜洪伍
李鹏
李勇
丁元法
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NEW-MATERIAL RESEARCH AND DEVELOPMENT BASE GUIZHOU PROV
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NEW-MATERIAL RESEARCH AND DEVELOPMENT BASE GUIZHOU PROV
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C11/00Alloys based on lead
    • C22C11/02Alloys based on lead with an alkali or an alkaline earth metal as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/03Making alloys by melting using master alloys

Abstract

The invention discloses a lead-calcium alloy production method. The lead-calcium alloy production method comprises the following steps: heating lead to a temperature of 700-800 DEG C in a smelting first furnace, adding aluminum, and casting to obtain a high-aluminum alloy cast after the aluminum is molten; during smelting of every furnace, only needing to smelt the lead at a low temperature of 500-600 DEG C, sequentially adding the high-aluminum alloy ingot and metal calcium into molten lead in proportion according to required alloy components, mixing until the high-aluminum alloy ingot and the metal calcium are completely molten, and casting the uniformly-mixed liquid to obtain the lead-calcium alloy. The lead-calcium alloy production method is improved based on a conventional lead-calcium alloy smelting process, so that the molten aluminum is only required to heat in the first furnace, and every furnace is not required to heat to a high temperature of 800 DEG C later on; and the lead-calcium alloy production method has the characteristics of being environmentally-friendly, energy-saving and consumption-reducing, high in production efficiency, long in equipment service life and the like; and the production processes are simplified.

Description

A kind of lead-calcium alloy production method
Technical field
The present invention relates to a kind of lead-calcium alloy production method, belong to metallurgical technology field.
Background technology
Lead-calcium alloy is mainly for the manufacture of the electrode plate grid of store battery or electrolytic zinc positive plate; traditional lead-calcium alloy production method is elder generation's molten Pb at 500 ~ 600 DEG C; then add aluminium on plumbous liquid surface and make protective material; manufacture lead-calcium master alloy, the lead-calcium alloy of final required alloying constituent produced by reusable lead-calcium master alloy.Due to the fusing point of aluminium higher (660 DEG C), so needing when adding aluminium to be warming up to 700 ~ 800 DEG C, stirring 1.5-2 hour, after aluminium melts completely, being cooled to 500 ~ 600 DEG C again adding calcium metal in plumbous liquation.This melting technology not only operation is many, length consuming time, production efficiency is low, and each stove all first will be warming up to 700 ~ 800 DEG C and lowers the temperature, and energy consumption is large, production cost is high, heating up when melting aluminium also to cause lead steam to volatilize in a large number, is detrimental to health, contaminate environment, intensification and temperature-fall period also can increase equipment loss frequently, shorten service life of equipment.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of energy efficient, simple process, the lead-calcium alloy production method that simple to operate, production efficiency is high, to overcome the deficiencies in the prior art.
For solving the problems of the technologies described above, technical scheme of the present invention is as follows:
A kind of lead-calcium alloy production method, the method only at the first stove smelted, lead is warming up to 700 ~ 800 DEG C, adds aluminium, after aluminium fusing, be cast into high-aluminium alloy ingot, for subsequent use; When every stove is smelted later, only under the low temperature of 500 ~ 600 DEG C, lead need be melted, then add high-aluminium alloy ingot and calcium metal in required alloying constituent ratio successively directly in plumbous liquid, be stirred to high-aluminium alloy ingot and calcium metal melts completely, by the liquid cast mixed, obtain lead-calcium alloy.
In above-mentioned lead-calcium alloy production method, described calcium metal can be the form of calcium block, calcium bits, calcium powder or calcium grain.
Beneficial effect of the present invention: compared with prior art, the present invention changes the improvement of traditional lead-calcium alloy melting technology, has following characteristics:
1. environmental protection: only need be raised to high temperature to 800 DEG C molten aluminium at first stove, every stove is without the need to heating up later, omnidistance low smelting heat, decreases lead steam volatilization, reduces environmental pollution.
2. energy-saving and cost-reducing: owing to being all warming up to 800 DEG C without the need to every stove, to significantly reduce power consumption, saved the energy, reduced cost, often refine 1 ton and at least can reduce costs 100 yuan, economic benefit is obvious.
3. production efficiency is high, consuming time short: melt aluminium owing to only need heat up at first stove, every stove eliminates the operation of the molten aluminium that heats up later, and therefore technique is simplified, simple to operate, without the need to stirring, greatly reduces labour intensity, shortens tap to tap time, improve production efficiency.
4. proterctive equipment: melt aluminium owing to only need heat up at first stove, every stove is without the need to heating up later, avoids frequent intensification and the cooling of smelting furnace, reduces equipment loss, extend work-ing life.
5. the proportion due to aluminium is much less than plumbous, and solubleness in liquid lead is less, therefore, when adding in plumbous liquid, aluminium often floats over plumbous liquid surface, at high temperature can produce a large amount of scum silica frost with oxygen reaction, adsorb many liquid lead, cause taking away a large amount of liquid metal lead in the process of dragging for away scum silica frost, cause waste.And the present invention is when adding plumbous liquid by high-aluminium alloy ingot, plumbous liquid surface can not be floated over, decrease plumbous waste.
Below in conjunction with embodiment, the present invention is further illustrated.
Embodiment
Embodiment 1.At the first stove of melting, first lead is warming up to 800 DEG C, adds appropriate aluminium, after fusing, be cast into high-aluminium alloy ingot, for subsequent use; Quantity and the specification of the high-aluminium alloy ingot of first stove casting can be determined according to production actual demand, the high-aluminium alloy number of spindles amount that can only cast needed for a day, and only need once heat up such every day molten aluminium; Also can high-aluminium alloy number of spindles amount needed for disposable casting one month, so monthly only need once heat up molten aluminium, and the rest may be inferred; When every stove is smelted later, only under the low temperature (liquefaction temperature of a little higher than lead) of 600 DEG C, lead need be melted, directly to adding a certain amount of high-aluminium alloy ingot and calcium metal in plumbous liquid successively, be stirred to high-aluminium alloy ingot and calcium metal melts completely, by the liquid cast mixed, obtain lead-calcium alloy.In the production process of lead-calcium alloy, aluminium, as calcium protective material, is unlikely to for the protection of added calcium metal the quality being affected the finished product at fusion process by being oxidized in a large number.Aluminium in the present invention adds with aluminium ingot form, makes it melt within a short period of time.The calcium metal used in the present invention can be the form of calcium block, calcium bits, calcium powder or calcium grain, as preferably, the form of calcium block can add calcium metal.In the present invention aluminium and calcium metal add-on according to product need regulated, the amount of calcium block required for usually calculating according to the calcium gauge in lead-calcium alloy.
Embodiments of the present invention are not limited to above-described embodiment, and the various changes made under the prerequisite not departing from present inventive concept all belong within protection scope of the present invention.

Claims (2)

1. a lead-calcium alloy production method, is characterized in that: only at the first stove smelted, lead is warming up to 700 ~ 800 DEG C, adds aluminium, casts, obtain high-aluminium alloy ingot after aluminium fusing, for subsequent use; When every stove is smelted later, only under the low temperature of 500 ~ 600 DEG C, lead need be melted, then add high-aluminium alloy ingot and calcium metal successively directly in plumbous liquid, be stirred to high-aluminium alloy ingot and calcium metal melts completely, the liquid mixed is cast again, obtains lead-calcium alloy.
2. lead-calcium alloy production method according to claim 1, is characterized in that: described calcium metal is the form of calcium block, calcium bits, calcium powder or calcium grain.
CN201510984320.XA 2015-12-25 2015-12-25 A kind of lead-calcium alloy production method Active CN105420548B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110644019A (en) * 2019-10-28 2020-01-03 昆明冶金研究院 Anode plate for high-electric-efficiency zinc electrolysis and preparation method thereof
CN111705337A (en) * 2020-06-23 2020-09-25 超威电源集团有限公司 Method for preparing lead-calcium master alloy by molten salt galvanic cell method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101693961A (en) * 2009-11-03 2010-04-14 株洲冶炼集团股份有限公司 Melting method for lead-calcium alloys
CN101696479A (en) * 2009-11-03 2010-04-21 株洲冶炼集团股份有限公司 Method for producing lead-calcium alloy

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101693961A (en) * 2009-11-03 2010-04-14 株洲冶炼集团股份有限公司 Melting method for lead-calcium alloys
CN101696479A (en) * 2009-11-03 2010-04-21 株洲冶炼集团股份有限公司 Method for producing lead-calcium alloy

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
李霞 等: "铅-钙-铝合金的研制及推广应用", 《甘肃冶金》 *
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110644019A (en) * 2019-10-28 2020-01-03 昆明冶金研究院 Anode plate for high-electric-efficiency zinc electrolysis and preparation method thereof
CN111705337A (en) * 2020-06-23 2020-09-25 超威电源集团有限公司 Method for preparing lead-calcium master alloy by molten salt galvanic cell method

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