CN110256100A - A method of lightweight wall plate is prepared using lead zinc - Google Patents

A method of lightweight wall plate is prepared using lead zinc Download PDF

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Publication number
CN110256100A
CN110256100A CN201910668816.4A CN201910668816A CN110256100A CN 110256100 A CN110256100 A CN 110256100A CN 201910668816 A CN201910668816 A CN 201910668816A CN 110256100 A CN110256100 A CN 110256100A
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Prior art keywords
wall plate
vertical
lightweight wall
lead zinc
hole
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CN201910668816.4A
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叶活耀
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    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/131—Inorganic additives
    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/135—Combustion residues, e.g. fly ash, incineration waste
    • C04B33/1352—Fuel ashes, e.g. fly ash
    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • C04B33/132—Waste materials; Refuse; Residues
    • C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6562—Heating rate
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6565—Cooling rate
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6567—Treatment time
    • 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
    • Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes

Abstract

The present invention relates to a kind of methods for preparing lightweight wall plate using lead zinc, it include material and proportion and manufacturing process flow, material mixture ratio are as follows: lead zinc 70~80% discards dregs 10~25%, flyash 5~10%, foaming agent are the 0.2~0.8% of total material；Process flow are as follows: 1) will be sieved after lead zinc, discarded dregs, flyash drying；2) ball milling is carried out respectively；3) it measures according to the ratio；4) stirring 2 minutes is done in blender；5) assembly mold is laid with incombustible paper powder and is packed into mold, is sent into sintering in sintering oven；6) 40 DEG C of kiln discharges successively are cooled to by preheating, sintering, cooling three operation stages；7) lightweight wall plate green body takes out, and is cut into predetermined size and shape by drawing；8) it crosses, process vertical through holes, cross through hole, vertical threading via hole, lateral threading via hole；9) vertical reinforcement is put in vertical through holes, puts transverse steel in cross through hole；10) glues pouring machine is poured into vertical through holes and cross through hole；11) it conserves, examine, storage.

Description

A method of lightweight wall plate is prepared using lead zinc
Technical field
The present invention relates to a kind of method for preparing lightweight wall plate using lead zinc, belong to industrial solid castoff utilize with Building energy conservation materials for wall field, and in particular to a kind of discarded using the industrial solids such as lead zinc, discarded dregs, flyash Object, again by being machined into a kind of lightweight wall plate with heat preservation, fire-proof function after high temperature sintering.
Background technique
With the development of mining industry, the various mine tailings generated during mining activities, especially outstanding is lead zinc, Belong to solid waste, be deposited among mountains and rivers and river more, take up an area and pollute environment, some meetings generate great accident, give The people's lives and property causes heavy losses；
As urbanization process quickening, the speed-raising of urbanization, the reconstruction of the old city town in shanty town constantly expand, produce a large amount of Discarded dregs, has biggish pollution to environment and underground water source；
The flyash of coal power plant discharge, also belongs to solid waste, also has pollution to environment and water source；
On the other hand, China uses most important thermal insulating material of the B2 grades of combustible material polyphenylene heat insulation slabs as building energy conservation Material, it is cheap although its thermal insulation property is superior, it is easy for construction；But it is easy to that serious fire occurs: as Beijing is entreated Depending on the wildfire occurred during the construction of exterior insulation system of new address 2009-02-03；The prosperous 2011-02-03 in Shenyang ten thousand is drawn due to fireworks The wildfire built up and occurred using the skyscraper outer heat preservation system of many years risen；Shanghai Jiangzhou road 2010-11-15 Building exterior wall heat preserving decoration renovation during the wildfire etc. that occurs, be all caused by polyphenylene heat insulation slab.For these Wildfire, relevant departments use series of improving measures, from heat preservation, fire proofing material to building heat preservation and architecture-integral. Although country pays much attention to the fire safety problem of architectural design, new to have formulated " Code for fire protection design of buildings " GB 50016-2014；But It is that by practice in recent years, or based on polyphenylene heat insulation slab, inorganic heat insulation material only accounts for few a part, few at this In the inorganic heat insulation material of part, the mainly foam glass of rock wool, air-entrained concrete building block, foam concrete block and fritter Deng, the lightweight wall plate of bulk cannot be formed, wall, but also substitution insulating layer have not only been substituted, and can be prevented fires, it is also durable.
How the solid waste such as lead zinc, flyash, discarded dregs are fabricated to one kind has heat preservation, prevents fires, resistance to Long lightweight wall plate, had both solved the problem of environmental pollution of above-mentioned solid waste, also solve energy saving building it is energy-efficient heat preservation, Heat-insulated, the integrated wall problem of fire prevention, realizes sustainable development, is the project urgently studied.
The present invention attempts to carry out existing energy saving building insulating wall material technology innovation, substitution, designs a kind of utilization Method of the solid waste such as the lead zinc preparation with heat preservation, the lightweight wall plate of fire-proof function, had both solved lead zinc, powder The problem of environmental pollution of the industrial solid castoffs such as coal ash, discarded dregs also solves the heat preservation, heat-insulated, anti-of energy saving building The deficient problem of fiery integrated wall material, improves the thermal insulation property of wall, fire protecting performance, and endurance quality has accomplished thermal insulating material Material and building same service life.
Summary of the invention
The technical scheme of the present invention is realized as follows: a kind of method for preparing lightweight wall plate using lead zinc, special Sign is: including material and proportion and manufacturing process flow, material mixture ratio are as follows: lead zinc 70~80% discards dregs 10 ~25%, flyash 5~10%, foaming agent is the 0.2~0.8% of total material；Process flow are as follows:
1) it will be sieved after lead zinc, discarded dregs, flyash drying, remove metal impurities；
2) lead zinc, discarded dregs, flyash are subjected to ball milling respectively, the fineness of dry powder is 200 mesh, and dry powder is sent to enter It is feed bin deposit, stand-by；
3) lead zinc, discarded dregs, flyash, foaming agent are measured respectively according to the ratio；
4) material measured is launched in blender, does stirring 2 minutes；
5) sintering mold is assembled, incombustible paper is laid on die bottom plate, dry mash is loaded on incombustible paper, dry powder will be housed The mold of material is sent into continuous sintering tunnel oven and is sintered；
6) dry mash is in kiln successively by heating preheating, three Isothermal sinter, cooling down operation stages: pre- in heating Hot stage, 10~20 DEG C/min of rate of heating, when temperature reaches 1150 DEG C, into the Isothermal sinter stage；Isothermal sinter rank The temperature range of section fluctuates between 1150 DEG C~1280 DEG C, Isothermal sinter time 0.5h~1.2h, the SiO of different wastes2、 Al2O3、CaO+MgO、K2The content of O+NaO is different, takes different Isothermal sinter temperature；In the cooling down stage, rate of temperature fall For 4~8 DEG C/min, belong to slow cooling, prevents sintering wallboard from generating stress cracking, until being cooled to 40 DEG C in kiln；
7) lightweight wall plate sintered is taken out out of mold；
8) lightweight wall plate is cut into defined size and shape by drawing；
9) it crosses to the baked light-weight wallboard 1 of well cutting, using being machined into one elongated boss 2, one Elongated groove 3, several vertical through holes 4, several cross through hole 5 and vertical threading via hole 9, lateral threading via hole 10；
10) vertical reinforcement 6 and fixation are placed in several vertical through holes 4, put lateral steel in several cross through hole 5 Muscle 7 and fixation；
11) metal connecting piece 11 for being located at 5 both ends of cross through hole is weldingly connected with transverse steel 7；
12) it after placing vertical reinforcement 6 and transverse steel 7, is poured into several vertical through holes 4 and several cross through hole 5 Self-leveling glues pouring machine 8；
13) it will be poured the lightweight wall plate after Self-leveling glues pouring machine 8, and was sent into curing kilns and carries out steam curing or nature Maintenance；
14) lightweight wall plate conserved carries out presentation quality, dimensional discrepancy, mechanical property, thermal property, fire protecting performance etc. It tests；
15) to qualified product packaging；
16) product warehousing.
Using the method produce lightweight wall plate be by baked light-weight wallboard 1, boss 2, groove 3, several vertical through holes 4, Several cross through hole 5, several vertical reinforcements 6, several transverse steels 7, glues pouring machine 8, vertical threading via hole 9, laterally threading Through-hole 10, several metal connecting pieces 11 are constituted.
The foaming agent is silicon carbide；The incombustible paper is aluminum silicate fiber paper.
Detailed description of the invention:
Fig. 1 is a kind of process flow chart for the method that lightweight wall plate is prepared using lead zinc of the present invention；
Fig. 2 is to be shown using a kind of lightweight wall plate solid for the method production for preparing lightweight wall plate using lead zinc of the present invention It is intended to；
Fig. 3 is to be shown using a kind of lightweight wall plate left view for the method production for preparing lightweight wall plate using lead zinc of the present invention It is intended to；
Fig. 4 is to be shown using a kind of lightweight wall plate vertical view for the method production for preparing lightweight wall plate using lead zinc of the present invention It is intended to；
Fig. 5 is to be cutd open using a kind of lightweight wall plate A-A for the method production for preparing lightweight wall plate using lead zinc of the present invention Face schematic diagram；
Fig. 6 is to be cutd open using a kind of lightweight wall plate B-B for the method production for preparing lightweight wall plate using lead zinc of the present invention Face schematic diagram；
Fig. 7 is using a kind of connection of the lightweight wall plate for the method production for preparing lightweight wall plate using lead zinc of the present invention The C-C diagrammatic cross-section of part 11；
Fig. 8 is using a kind of connection of the lightweight wall plate for the method production for preparing lightweight wall plate using lead zinc of the present invention The schematic front view of part 11.
In figure: 1 is baked light-weight wallboard
2 be boss
3 be groove
4 be vertical through holes
5 be cross through hole
6 be vertical reinforcement
7 be transverse steel
8 be glues pouring machine
9 be vertical threading via hole
10 be lateral threading via hole
11 be metal connecting piece
12 be connecting hole
Specific embodiment
The invention is realized in this way 1~Fig. 8 is described further with reference to the accompanying drawing: a kind of to utilize lead zinc system The method of standby lightweight wall plate, includes material and proportion and manufacturing process flow, material mixture ratio are as follows: lead zinc 70~80%, Discarded dregs 10~25%, flyash 5~10%, foaming agent are the 0.2~0.8% of total material；Process flow are as follows:
1) it will be sieved after lead zinc, discarded dregs, flyash drying, remove metal impurities；
2) lead zinc, discarded dregs, flyash are subjected to ball milling respectively, the fineness of dry powder is 200 mesh, and dry powder is sent to enter It is feed bin deposit, stand-by；
3) lead zinc, discarded dregs, flyash, foaming agent are measured respectively according to the ratio；
4) material measured is launched in blender, does stirring 2 minutes；
5) sintering mold is assembled, incombustible paper is laid on die bottom plate, dry mash is loaded on incombustible paper, dry powder will be housed The mold of material is sent into continuous sintering tunnel oven and is sintered；
6) dry mash is in kiln successively by heating preheating, three Isothermal sinter, cooling down operation stages: pre- in heating Hot stage, 10~20 DEG C/min of rate of heating, when temperature reaches 1150 DEG C, into the Isothermal sinter stage；Isothermal sinter rank The temperature range of section fluctuates between 1150 DEG C~1280 DEG C, Isothermal sinter time 0.5h~1.2h, different trade wastes SiO2、Al2O3、CaO+MgO、K2The content of O+NaO is different, takes different Isothermal sinter temperature；In the cooling down stage, drop Warm rate is 4~8 DEG C/min, belongs to slow cooling, prevents sintering wallboard from generating stress cracking, until being cooled to 40 DEG C in kiln；
7) lightweight wall plate sintered is taken out out of mold；
8) lightweight wall plate is cut into defined size and shape by drawing；
9) it crosses to the baked light-weight wallboard 1 of well cutting, using being machined into one elongated boss 2, one Elongated groove 3, several vertical through holes 4, several cross through hole 5 and vertical threading via hole 9, lateral threading via hole 10；
10) vertical reinforcement 6 is placed in several vertical through holes 4 and fixed make a noise is leaned on, and puts lateral steel in several cross through hole 5 Muscle 7 simultaneously fixes noisy lean on；
11) metal connecting piece 11 for being located at 5 both ends of cross through hole is weldingly connected with transverse steel 7；
12) it after placing vertical reinforcement 6 and transverse steel 7, is poured into several vertical through holes 4 and several cross through hole 5 Self-leveling glues pouring machine 8；
13) it will be poured the lightweight wall plate after Self-leveling glues pouring machine 8, and was sent into curing kilns and carries out steam curing or nature Maintenance；
14) lightweight wall plate conserved carries out presentation quality, dimensional discrepancy, mechanical property, thermal property, fire protecting performance etc. It tests；
15) to qualified product packaging；
16) product warehousing.
Using lightweight wall plate produced by the invention be by baked light-weight wallboard 1, boss 2, groove 3, several vertical through holes 4, Several cross through hole 5, several vertical reinforcements 6, several transverse steels 7, glues pouring machine 8, vertical threading via hole 9, laterally threading Through-hole 10, several metal connecting pieces 11 are constituted.
The foaming agent is silicon carbide；The incombustible paper is aluminum silicate fiber paper.
The beneficial effect comprise that:
1) using a kind of method for preparing lightweight wall plate using lead zinc of the invention produce have heat preservation, every Heat is prevented fires, the lightweight wall plate of durable function, is the technology innovation to existing energy saving building insulating wall material, substitution.It is this Lightweight wall plate solves the serious quality problems such as the fire prevention of working procedure and exterior-wall heat insulation of exterior insulation, is carrying out energy conservation In the work progress of building, greatly improve speed of application, considerably reduce building cost, meanwhile, improve wall heat preservation, Heat-insulated, sound insulation value, fire protecting performance have accomplished thermal insulation material and building same service life.Such baked light-weight wallboard has intensity High, the advantages that water absorption rate is low, thermal inertia is good, thermal insulation property is high, fire protecting performance belongs to incombustible material, durability is good, frost resistance is good, Meet the requirement of new edition " Code for fire protection design of buildings " GB 50016-2014 (version in 2018).
2) use a kind of method for preparing lightweight wall plate using lead zinc of the invention, using lead zinc, flyash, A large amount of solid waste such as discarded dregs, fired through feedstock processing, reasonably combined, high temperature, it is machined again form, greatly It solves environmental protection problem, turns waste into wealth, the benign cycle for reaching resource utilizes, and meets national sustainable development.

Claims (2)

1. a kind of method for preparing lightweight wall plate using lead zinc, it is characterised in that: include material and proportion and manufacture work Skill process, material mixture ratio are as follows: lead zinc 70~80% discards dregs 10~25%, and flyash 5~10%, foaming agent is total The 0.2~0.8% of material；Process flow are as follows:
1) it will be sieved after lead zinc, discarded dregs, flyash drying, remove metal impurities；
2) lead zinc, discarded dregs, flyash are subjected to ball milling respectively, the fineness of dry powder is 200 mesh, and dry powder is sent to enter feed bin It lays in, is stand-by；
3) lead zinc, discarded dregs, flyash, foaming agent are measured respectively according to the ratio；
4) material measured is launched in blender, does stirring 2 minutes；
5) sintering mold is assembled, incombustible paper is laid on die bottom plate, dry mash is loaded on incombustible paper, dry mash will be housed Mold is sent into continuous sintering tunnel oven and is sintered；
6) dry mash is in kiln successively by heating preheating, three Isothermal sinter, cooling down operation stages: preheating rank in heating Section, 10~20 DEG C/min of rate of heating, when temperature reaches 1150 DEG C, into the Isothermal sinter stage；The Isothermal sinter stage Temperature range fluctuates between 1150 DEG C~1280 DEG C, Isothermal sinter time 0.5h~1.2h, the SiO of different trade wastes2、 Al2O3、CaO+MgO、K2The content of O+NaO is different, takes different Isothermal sinter temperature；In the cooling down stage, rate of temperature fall For 4~8 DEG C/min, belong to slow cooling, prevents sintering wallboard from generating stress cracking, until being cooled to 40 DEG C in kiln；
7) lightweight wall plate sintered is taken out out of mold；
8) lightweight wall plate is cut into defined size and shape by drawing；
9) it crosses to the baked light-weight wallboard (1) of well cutting, using being machined into an elongated boss (2), one Elongated groove (3), several vertical through holes (4), several cross through hole (5) and vertical threading via hole (9), lateral threading via hole (10)；
10) vertical reinforcement (6) and fixation are placed in several vertical through holes (4), put transverse direction in several cross through hole (5) Reinforcing bar (7) and fixation；
11) metal connecting piece (11) for being located at cross through hole (5) both ends is weldingly connected with transverse steel (7)；
12) after placing vertical reinforcement (6) and transverse steel (7), into several vertical through holes (4) and several cross through hole (5) It is poured Self-leveling glues pouring machine (8)；
13) it will be poured the lightweight wall plate after Self-leveling glues pouring machine (8), and was sent into curing kilns and carries out steam curing or naturally feeding Shield；
14) lightweight wall plate conserved carries out presentation quality, dimensional discrepancy, mechanical property, thermal property, fire protecting performance etc. and carries out It examines；
15) to qualified product packaging；
16) product warehousing.
2. a kind of method for preparing lightweight wall plate using lead zinc according to claim 1, it is characterised in that: use this The lightweight wall plate of method production is by baked light-weight wallboard (1), boss (2), groove (3), several vertical through holes (4), several cross To through-hole (5), several vertical reinforcements (6), several transverse steels (7), glues pouring machine (8), vertical threading via hole (9), transverse direction Threading via hole (10), several metal connecting pieces (11) are constituted.
CN201910668816.4A 2019-07-24 2019-07-24 A method of lightweight wall plate is prepared using lead zinc Withdrawn CN110256100A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910668816.4A CN110256100A (en) 2019-07-24 2019-07-24 A method of lightweight wall plate is prepared using lead zinc

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Application Number Priority Date Filing Date Title
CN201910668816.4A CN110256100A (en) 2019-07-24 2019-07-24 A method of lightweight wall plate is prepared using lead zinc

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CN110256100A true CN110256100A (en) 2019-09-20

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