CN103258583A - Resistance reducing material and application of iron ore in grounding grid upgrading as resistance reducing material - Google Patents
Resistance reducing material and application of iron ore in grounding grid upgrading as resistance reducing material Download PDFInfo
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- CN103258583A CN103258583A CN2013101748388A CN201310174838A CN103258583A CN 103258583 A CN103258583 A CN 103258583A CN 2013101748388 A CN2013101748388 A CN 2013101748388A CN 201310174838 A CN201310174838 A CN 201310174838A CN 103258583 A CN103258583 A CN 103258583A
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Abstract
The invention relates to a resistance reducing material and application of iron ore in grounding grid upgrading as the resistance reducing material. The resistance reducing material is prepared by mixing of the iron ore with a grade of 10%-20% and clay or fine earth according to a stone intermingling ratio of 40%-50%. The resistance reducing material and the application of the iron ore in the grounding grid upgrading as the resistance reducing material are suitable for all capital construction or reconstruction projects where the resistance reducing material or grounding modules are needed for reducing main electric parameters of grounding grids, the scope of pollution on nature by leakage of traditional resistance reducing material can be reduced, the purpose of improving electrical resistivity of earth around a grounding electrode can be achieved, and waste iron ore can be made profitable.
Description
Technical field
The present invention relates to a kind of application of ore, relate in particular to the application as resistance-lowering material in ground network is transformed of a kind of resistance-lowering material and iron ore.Be applicable to 66kV and above electric pressure transformer station, need to use resistance-lowering material or earthing module to reach in the construction that reduces the grounded screen electric resistance value and the earthing device of communication apparatus such as mobile communication tower, television tower, microwave tower, radio station, radar station, railway need use in the place of resistance-lowering material.
Background technology
Grounding net of transformer substation is patrolled and examined personal security and is played important effect guaranteeing power equipment safety stable operation and assurance operation, and the main electrical parameters of grounding net of transformer substation is earth resistance, contact potential difference and the potential difference that strides.Mountain area transformer station generally all build on the riverbed or through the ditch of backfill soil get on or the mountain stone of half way up the mountain on, these local soil resistivities are all very high, high resistivity directly causes the grounded screen electric resistance requirement that is above standard, in order to reduce soil resistivity, all like using the be reduced purpose of soil resistivity in the transformer station of inorganic resistance reducing agent or organic resistance reducing agent in the construction.
Regularly detect discovery by power transformation station owner ground network and lightning rod to 66kV and above electric pressure, newly-built or improved transformer station test number is all very little, but after operation a period of time, it is a lot of to find that numerical value increases, and reason is that the resistance-lowering material that uses around the earth electrode has all been walked by rain drop erosion.In order to change this situation, be badly in need of the various resistance-lowering materials that a kind of new resistance-lowering material replaces traditional experiment.
The native iron ore through broken, grind, magnetic separation, flotation, gravity treatment supervisor select the grade iron ore that needs gradually, the grade of iron ore refers to the mass fraction of ferro element in the iron ore, popular is exactly iron-holder.Such as the grade of iron ore is 62%, and referring to wherein, the mass fraction of ferro element is 62%.For bloodstone, main component is Fe2O3, and the high-grade of theory is 70%; For magnetic iron ore, main component is Fe3O4, and the high-grade of theory is 72.4%; For siderite, main component is FeCO3, and the high-grade of theory is 48.3%; For limonite, main component is Fe2O3.H2O, and the high-grade of theory is 62.9%.The scrap iron grade of ore generally all is lower than 10%, the rubble after the screening: general diameter is 13-80mm, and through screening, 40-80% is usually used in bed course, and 13-40% is usually used in cement concrete etc., and littler aggregate chips, stone flour are often made the material of asphalt concrete.Slagheap accounts for presses a large amount of soils, and land resource can not effectively be utilized; Biological environment around the heavy damage mining area, very easily geological disaster takes place; The mine is in the geomorphologic conditions based on the Plain, and mine tailing storehouse, drainage field addressing difficulty also are the first-class problems that restriction mine selecting and purchasing is produced, and bargh also supports to handle the iron ore slag very much.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, a kind of resistance-lowering material is provided, solved the resistance-lowering material that earth electrode uses in the prior art on every side easily by the problem of rain drop erosion.
Another object of the present invention is to provide the application as resistance-lowering material in ground network is transformed of a kind of iron ore.
Technical scheme of the present invention is as follows:
By being prepared from, grade is at the iron ore of 10%-20% by following raw materials according for resistance-lowering material, and rate 40%-50% ratio is mixed with clay or fine earth in layinging of markstone.
Described iron ore rubble diameter is 10-30mm.
Described iron ore is the ettle that contains ferro element.
Described ettle comprises any in bloodstone, magnetic iron ore, siderite and the limonite.
Iron ore in ground network is transformed as the application of resistance-lowering material.
Advantageous effect of the present invention is as follows:
During the present invention is applicable to that capital construction that all need use resistance-lowering material or earthing module to reach to reduce the ground network main electrical parameters or construction are transformed, can reduce the pollution range that traditional resistance-lowering material leaks the Nature is caused, can reach again and improve earth electrode surrounding soil resistivity, also can allow the scrap iron ore turn waste into wealth simultaneously.
Description of drawings
Fig. 1 is the application and construction schematic diagram of iron ore of the present invention in main ground network.
Among the figure, 1, zinc-plated main ground connection steel band; 2, vertical Zinc-coated angle steel; 3, connection device galvanized steel strip; 4, thick clay; 5, former sandstone soil; 6, thick iron ore mixture; 7, former sandstone soil.
Embodiment
Be described in detail the present invention with reference to the accompanying drawings.
Embodiment 1
Resistance-lowering material, the bloodstone iron ore of grade 10% mixes with clay in the rate of layinging of markstone 40% ratio, and iron ore rubble diameter is 10mm.
Embodiment 2
Resistance-lowering material, the magnetic iron ore iron ore of grade 20% mixes with fine earth in the rate of layinging of markstone 50% ratio.Iron ore rubble diameter is 30mm.
Embodiment 3
Resistance-lowering material, grade are at the siderite of 10%-20% and the iron ore of limonite, and rate 40%-50% ratio is mixed with black earth in layinging of markstone.Iron ore rubble diameter is 10-30mm.
Iron ore as the application of resistance-lowering material, is applicable to that all need use resistance-lowering material or earthing module to reach during the long-term construction that improves grounded screen electric resistance transforms in ground network is transformed.Particularly be applicable to newly-built on back fill course, on the riverbed, the earthing device of communication apparatus such as the transformer station on the stone of mountain, mobile communication tower, microwave tower, radar station, railway need use during the construction of resistance-lowering material or earthing module transforms.
In concrete construction, what are different with burying earth strip underground to use resistance-lowering material or earthing module material according to the substation, change iron ore grade and the rate of layinging of markstone, and can change transformer station's soil resistivity.
Before the construction, at first burying the iron ore that earth strip what, ditch width and the degree of depth are prepared sufficient amount and grade underground according to transformer station, prepare sufficient clay, fine earth or black earth.According to construction requirement, as shown in Figure 1, be that the degree of depth that the main earth strip of laying is used is in 800-1000mm ditch, at first 50 * 50 * 5 vertical Zinc-coated angle steel 2 usefulness iron hammers are squeezed in the ditch, reserve after outer 50 * 50 * 5 vertical Zinc-coated angle steels 2 are squeezed into and reveal 20-30mm and 50 * 5 zinc-plated main ground connection steel band 1 firm welding, then 50 * 5 galvanized steel strip 3 and 50 * 5 zinc-plated masters that connect the electric equipment framework are connect steel band 1 firm welding, weld is smeared with anti-corrosion asphalt.Secondly, in order to prevent that rain leakage from causing the fine earth in the 200-400mm iron ore mixture 6 to run off, reality tramps with one's feet after ditch bottom laying depth is 10-20mm clay 4, iron ore and the mixed mixture 6 of fine earth are inserted in the ditch, the iron ore mixture of inserting 6 is treaded in the middle of zinc-plated main ground connection steel band 1 is wrapped in again.At last, former sandstone soil 7 is inserted compacting and get final product concordant with peripheral ground in the ditch.
Claims (5)
1. resistance-lowering material is characterized in that by following raw materials according by being prepared from, grade is at the iron ore of 10%-20%, and rate 40%-50% ratio is mixed with clay or fine earth in layinging of markstone.
2. resistance-lowering material according to claim 1 is characterized in that described iron ore rubble diameter is 10-30mm.
3. resistance-lowering material according to claim 1 is characterized in that described iron ore is the ettle that contains ferro element.
4. resistance-lowering material according to claim 3 is characterized in that described ettle comprises any in bloodstone, magnetic iron ore, siderite and the limonite.
5. according to the application as resistance-lowering material in ground network is transformed of claim 1,2,3 or 4 described iron ores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101748388A CN103258583A (en) | 2013-05-13 | 2013-05-13 | Resistance reducing material and application of iron ore in grounding grid upgrading as resistance reducing material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101748388A CN103258583A (en) | 2013-05-13 | 2013-05-13 | Resistance reducing material and application of iron ore in grounding grid upgrading as resistance reducing material |
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| CN103258583A true CN103258583A (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101748388A Pending CN103258583A (en) | 2013-05-13 | 2013-05-13 | Resistance reducing material and application of iron ore in grounding grid upgrading as resistance reducing material |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030666A (en) * | 1988-03-28 | 1989-01-25 | 傅辅成 | Inorganic-chemical solid reducer of ground resistance |
| CN1119630A (en) * | 1994-09-28 | 1996-04-03 | 傅辅成 | Solid inorganic resistance reducing agent |
| KR101135631B1 (en) * | 2011-12-09 | 2012-04-17 | 주식회사 인트켐 | Manufacturing method of light-weight grounding plate |
| KR101135613B1 (en) * | 2011-12-09 | 2012-04-17 | 주식회사 인트켐 | Manufacturing method of light-weight grounding rod |
| CN102437437A (en) * | 2011-08-03 | 2012-05-02 | 山东电力工程咨询院有限公司 | Grounding resistance reduction process method for sand/gravel area |
| CN202523855U (en) * | 2012-03-16 | 2012-11-07 | 中国十七冶集团有限公司 | Grounding body for reducing grounding resistance of wind driven generator |
-
2013
- 2013-05-13 CN CN2013101748388A patent/CN103258583A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1030666A (en) * | 1988-03-28 | 1989-01-25 | 傅辅成 | Inorganic-chemical solid reducer of ground resistance |
| CN1119630A (en) * | 1994-09-28 | 1996-04-03 | 傅辅成 | Solid inorganic resistance reducing agent |
| CN102437437A (en) * | 2011-08-03 | 2012-05-02 | 山东电力工程咨询院有限公司 | Grounding resistance reduction process method for sand/gravel area |
| KR101135631B1 (en) * | 2011-12-09 | 2012-04-17 | 주식회사 인트켐 | Manufacturing method of light-weight grounding plate |
| KR101135613B1 (en) * | 2011-12-09 | 2012-04-17 | 주식회사 인트켐 | Manufacturing method of light-weight grounding rod |
| CN202523855U (en) * | 2012-03-16 | 2012-11-07 | 中国十七冶集团有限公司 | Grounding body for reducing grounding resistance of wind driven generator |
Non-Patent Citations (1)
| Title |
|---|
| 岑香花等: "广西高速公路房屋建筑防雷保护措施", 《西部交通科技》, vol. 2006, no. 5, 31 October 2006 (2006-10-31) * |
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Application publication date: 20130821 |