CN1194252A

CN1194252A - Comprehensive utilization of waste battery

Info

Publication number: CN1194252A
Application number: CN98100941A
Authority: CN
Inventors: 王京伟
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-03-23
Filing date: 1998-03-23
Publication date: 1998-09-30

Abstract

The invention relates to a comprehensive utilization of waste batteries, which is characterized in that the waste batteries are used as ingredients and added into common concrete raw materials, namely cement, sand and stone, to prepare a new concrete product. The strength of the concrete product reaches 10-40 MPa, and the concrete product can be used for concrete products including square bricks, vertical road teeth and isolation piers for squares and roads, finds a way for comprehensively utilizing dry batteries, and has important significance for protecting the environment and saving natural resources.

Description

Comprehensive utilization of waste battery

The present invention belongs to the field of comprehensive utilization of waste material, and is especially the utilization of waste dry cell as the compounding component of concrete.

For a long time, the waste dry batteries are buried as garbage, the land occupation is required for the burying, particularly, after the waste batteries are decayed, harmful substances such as mercury in the waste dry batteries permeate underground to destroy soil quality, are extremely unfavorable for the growth of plants, are mixed into water sources and harm people and livestock, so that the environment is polluted and resources are wasted. How to comprehensively utilize them is a subject of attention and research. The prior published data has provided a plurality of methods starting from recovering the metal therein, for example, application numbers 87102008 and 94111199 provide methods for extracting manganese dioxide and zinc from waste zinc-manganese batteries, and patent numbers 91106609 and 89105850 disclose methods for recovering metal nickel and cadmium from waste nickel-cadmium batteries.

The invention aims to overcome the defects of the existing waste dry battery treatment method and provide a method for preparing a concrete product meeting the use requirement by directly using the waste dry battery as a concrete ingredient component

The main technical scheme for realizing the purpose of the invention is as follows: the waste battery is used as a component to be added into common concrete ingredients, namely cement, sand and stone, so as to replace part of the sand and stone to prepare a new concrete product

The concrete ingredients of the invention comprise cement, sand, stone and waste batteries, the addition amount of the waste batteries is the amount of the substituted sand and stone, and the weight ratio of the ingredients is preferably cement: sand, stone: waste battery = 1: 0.9-2.50: 1.90-6.20: 0.15-0.40

Other additives including water reducing agents and anti-freezing agents can also be mixed into the concrete.

The cement comprises common hydraulic cement, portland cement and slag cement, and the proportion of the concrete can be adjusted according to the quality requirement of products due to different qualities of the cement.

The stone material comprises river stone and broken pebbles, and the granularity is 5-32mm.

The sand material comprises medium sand and coarse sand, preferably medium sand with the granularity of 2.1-3.0 mm.

The waste batteries comprise waste disposable dry batteries and waste rechargeable dry batteries of various types.

The preparation method comprises the following steps: the waste batteries are crushed and mixed with cement, sand, stone or other additives in certain proportion, and the crushed waste batteries may be mixed with cement, sand, stone or other additives in certain proportion.

The concrete prepared by the method of the invention is added with a certain amount of water according to the normal water cement ratio, and can be used for concrete products requiring 10-40MPa of compressive strength after being stirred.

The invention has the main advantages and effects that:

the invention uses waste battery as concrete ingredient component, and utilizes the characteristics of high-strength adhesiveness, curability and anti-adulteration of cement to tightly seal harmful substance in the waste battery in the concrete, and the strength of the final concrete product can meet the quality requirements of some concrete products including square bricks, road blocks and isolation piers for square and road.

The features of the present invention are further illustrated by the following specific examples.

Example 1

375kg of No. 325 cement, 596kg of medium sand material, 1219kg of crushed stone with the granularity of 5-31.5mm and 105kg of crushed waste dry battery are stirred and mixed evenly, 173kg of water is added according to the water-cement ratio (water: cement) of 0.46, and the performance of the concrete is shown in Table 1

Examples 2 to 10

The proportions and properties of the concretes of examples 2-10 are detailed in Table 1

TABLE 1

Examples of the invention	Ratio of ingredients	Water (W) Ash of Ratio of	Cement Amount in kg	External mixing agent and addition amount (based on cement) ％	Concrete Properties		Remarks for note
	Ratio of ingredients				Concrete Properties			Waste water-sand battery Pug material	Compressive strength Degree, MPa	Slump constant CM
	1 2 3 4 5 6 7 8 9 10				1 1.59 3.25 0.28 1 2.06 4.16 0.22 1 1.95 4.20 0.21 1 2.20 4.48 0.20 1 1.30 2.54 0.34 1 1.82 3.48 0.40 1 1.81 3.58 0.33 1 3.34 5.95 0.15 1 3.50 6.12 0.15 1 0.99 1.92 0.25	0.46 0.47 0.56 0.59 0.39 0.46 0.44 0.70 0.75 0.42		Waste water-sand battery Pug material	Compressive strength Degree, MPa	Slump constant CM	375 316 310 265 449 349 349 220 210 550	Early strength water reducing agent UNF-55% UNF-5 0.5％ Sodium humate III-10.3% UNF-5 0.5％	25MPa 25MPa 25MPa 25MPa 30MPa 30MPa 30MPa 10MPa 10MPa 40MPa	4-6 4-6 4-6 4-6 6-8 4-6 4-6 2-4 4-6 2-4	Cement No. 325, medium sand 2.3-3.0mm, broken stone 5-1.5mm Cement 425#, otherwise the same as example 1 Cement 525#, the rest being the same as example 1 Cement, sand and stone materials are as in example 1 Cement, sand and stone materials are the same as in example 3 Cement No. 325, otherwise identical to example 1 Cement 425#, other examples are the same as example 1 Cement 425#, other examples are the same as example 1

Claims

1. A method for utilizing waste battery features that the waste dry battery which can replace part of sand and stone is added to existing concrete, and the mixture is stirred to obtain new concrete product.

2. The utilization method according to claim 1, wherein the weight ratio of the cement, the sand, the stone and the waste battery is 1: 0.9-2.50: 1.90-6, 20: 0.15-0.40.

3. The utilization method according to claim 1, wherein said cement comprises ordinary hydraulic cement, portland cement, slag cement.

4. The utilization method according to claim 1, wherein said sand material includes medium sand and coarse sand.

5. A utilization method according to claim 1, characterized in that the grain size of the rock material is 5-32mm.

6. The utilization method according to claim 1, wherein the waste batteries include disposable waste dry batteries, waste rechargeable dry batteries.

7. The product of the process of claim 1 characterized by being a concrete comprising spent batteries and components of cement, sand, and stone.

8. The product of claim 7 wherein said concrete component further comprises a water reducing agent. Additives including anti-freeze agents.