powder mill and presser for slag

workers comp class codes

A class code is a three or four digit numerical code assigned by NCCI or a State Rating Bureau such as California's WCIRB. Class codes are assigned to differentiate between the various job duties or scope of work performed by employees. NCCI's classification system contains nearly 800 unique class codes and is the basis for both pricing and underwriting workers' compensation insurance rates. NCCI is the abbreviation for the National Council on Compensation Insurance. They provide statistical data to insurance companies and states.

One of the primary means of pricing workers' compensation insurance is classifying a risk, or workplace exposure, within the proper NCCI workers' compensation class code. Incorrect risk classifications by insurance agents or underwriters will result in an inaccurate premium. Payroll may be reclassified and moved to the correct class code at the time of audit. This could result in a policy credit or debit. A workers' compensation audit is the process to make sure payroll was appropriately estimated and employees were correctly classified.

In most states, the workers compensation classification system used is maintained by NCCI, the National Council on Compensation Insurance. NCCI is an independent advisory organization largely funded by the insurance companies. Both insurance companies and states utilize NCCI's statistical data for rating and pricing coverage. NCCI's function is to develop and provide the statistical data used to set manual rates for workers compensation insurance. This process is done, individually, for each state that utilizes NCCI. These manual rates are used for pricing and to assign each employers' annual Experience Modification Rate, These NCCI worksheets, or Experience Modification Ratings are developed based on a ratio of claims frequency and cost of premium paid.

NCCI was found in 1923. They help cultivate a healthy workers compensation system. Their objective data and trend analysis promotes competition between insurance companies. Their data is also used by states and insurance companies to set rates for each class code based on prior underwriting profitability or losses.

Each classification code is comprised of a group of employers with a similar exposures, or types of hazards. A basic classification code denotes a particular type of job duty within a business. Therefore, a class code is the systematic arranging of properties, persons, or business operations into groups or categories according to certain criteria. This arrangement is done to create a basis for establishing statistical experience and determining workers compensation rates, and to avoid unfair discrimination by insurance companies. The essential concept of "fair discrimination" is that each risk should bear its fair share of the overall cost of expenses and losses in relationship to its own relevant expenses and hazards.

A Scopes class code is the identifying number for each occupational classification. It is the numeric code assigned to a specific occupation of workers. The class code is based on the nature of the work for the employer and employee. It is common for most employers to have two or more class codes on their policy.

For example: Class code 8810 is for a clerical exposure and class code 5645 is for a general residential construction exposure. A contractor might have laborers working under class code 5645 and an office person rated under the clerical class code.

The Scopes Manual is the industry standard workers compensation class code book containing numerical classification codes and the classification phraseology for each code used in classifying workers' compensation risks, including state special codes. The NCCI Scopes Manual is available for purchase from NCCI.

If your business has ever been through a worker comp audit, then you know that the auditor is trying to determine if all payroll is accounted for and if it was assigned to the proper workers' comp code or codes. If an auditor determines that employees were incorrectly classified, the insurance company can retroactively bill your business for up to 3 years of misclassified premium.

Incorrect workers' comp codes can also adversely affect a businesses experience modification factor over time. Claim frequency and loss ratios may be skewed from the industry norm and your business may end up with a higher experience modifier, or EMR rating. This ultimately increases the cost of workers comp insurance.

Some insurance companies may even cancel coverage when a business is found to have incorrect class codes. Anytime a carrier cancels coverage it gets reported to NCCI. Many carriers won't offer workers comp quotes to a business that has had a policy canceled by another carrier.

There are a few states that do not use the NCCI classification system. California, New Jersey, New York, Delaware, and Pennsylvania utilize their own classification systems. Many other states have some "state special" classifications that may vary significantly from NCCI standard definitions for certain workplace classification codes. To learn more about class codes under NCCI's jurisdiction visit our state workers compensation directory.

Our Workers Compensation Specialists take the time to review your current work comp class codes in order to make sure we quote your employees and policy correctly. We work directly with NCCI to validate your job classifications and have been successful in recovering past premium from insurance companies who have incorrectly classified your business. Most states allow us to recoup up to three years of premium.

As an employer, you have the right to appeal to NCCI for proper classification assignment. This process may include submitting all job duties to NCCI and paying for an NCCI auditor to come to your facility for an inspection and ruling. In most cases, our Specialists can work with NCCI representatives on your behalf to ensure your employees are properly classified with the classification codes that accurately reflect the scope of work performed and reduce your rates and premium.

slag mill, slag powder mill

Water slag is formed by rapidly cooling molten blast furnace slag in water, mainly by water quenching in slag pool and water quenching in front of furnace. Blast furnace slag is a kind of molten material, mainly composed of calcium silicate and calcium aluminate, which is produced in the process of pig iron smelting by blast furnace. It is granulated by water quenching. It is referred to as water slag, water quenched slag and so on. When the furnace temperature reaches 1400-1600, the burden melts, gangue in ore, ash in coke, cosolvent and other impurities which can not enter pig iron form slag mainly composed of silicate and aluminate, whose main components are CaO, SiO and AlO.

Water slag is the hot melt blast furnace slag in the water after rapid cooling of the waste slag, used to be abandoned, or is used to fill the road, and now through the blast furnace water slag grinding machine processing, the resulting water slag powder can be used as concrete and cement raw materials. Slag has potential hydraulic cementing property. It can be used as high quality cement raw material by using water slag micro-grinding machine, and then under the action of cement clinker, lime, gypsum and other activators. The blast furnace slag mill manufactured in Vanguard can process the slag to 325 mesh fine powder, which is beneficial to its application. Vanguard provides users with a complete set of slag powder production process, including the drying of water containing slag for drying treatment, crusher of crushing large slag, slag mill, conveyor hoist and other equipment. Vanguard Slag Mill is a vertical structure, covers a small area, complete sets of strong, and the main engine transmission device using closed gear box, stable transmission. The important parts of the mill are made of high-quality steel, so the whole mill is wear-resistant and reliable. The mill adopts centralized control, advanced and reasonable selection and high degree of automation. The vibrating feeder is small and light in weight, easy to adjust and maintain, and saves electricity very much. Slag is used as building material for cement and concrete. Because of its potential hydraulic cementing property, it can be used as high-quality cement raw material under the action of cement clinker, lime, gypsum and other activators. It can be made into slag Portland cement, gypsum slag cement, lime slag cement, slag brick, slag concrete and so on. It can also be used as a raw material for producing environmental friendly cement bricks.

slag mill, slag powder mill, slag u

Ore residue after mineral processing or smelting is called slag. The slag containing SiOis acid slag, and AlO and CaO are mostly alkaline slag. The activity of alkaline slag is higher than that of acid slag. Slag has certain water hardness and is not suitable for long-term storage. Slag powder is the raw material of blast furnace slag in metallurgical industry. It is an indispensable inorganic mineral admixture for high strength and high performance concrete. It is a high-tech product of building materials. Using slag powder as concrete admixture can not only replace cement equally and reduce the cost of concrete, but also make full use of blast furnace slag. It saves a lot of precious resources that can not be regenerated for the country and alleviates the shortage of cement supply in time.

Slag micro-powder is the process of processing and reusing the slag with grinder. The grinder produced by Vanguard Machinery adopts grinding roller to grind the material directly on the grinding plate. The energy consumption is low. Compared with the ball mill, the energy consumption is reduced by 30%-40%. The fineness of the product can reach D97 < 5 micron at one time. At the same time, the investment and operation cost is low. It can be used as the best equipment for processing slag because of its strong drying ability, simple operation, reliable operation, stable product quality, convenient maintenance and low carbon environmental protection. The construction contents of the slag powder project include slag conveying to slag grinding, powder storage, automobile bulk, packing and leaving factory, main production process of train bulk, general plane engineering, electrical, automatic control, power supply and drainage engineering, etc. Slag grinding mainly adopts the international advanced and mature European plate grinder process which integrates fine grinding, drying, grinding, flour separation and transportation. The process has the advantages of small floor area, simple process flow, high grinding efficiency, low energy consumption, low noise, large drying capacity, easy adjustment of product fineness, no dust pollution and maintenance prescription. Convenient and reliable operation. Slag plays an important role in industrial production, especially in some major factories. The slag is refined into slag cement, slag powder, slag powder, slag Portland cement, slag wool, blast furnace slag, granulated blast furnace slag powder and copper slag. Besides, blast furnace slag can also be used as raw material for casting stone, glass ceramics, fertilizer, enamel and ceramics. Slag powder is mainly used to mix in cement and to add in commercial concrete to replace the amount of cement used in various kinds of concrete and cement products. It can obviously improve the comprehensive performance of concrete and cement products. As a new admixture of high performance concrete, slag powder has the advantages of improving various properties of concrete.

what is the introduction of a vertical roller mill for slag?

We generally recommend customers to use vertical roller mill equipment. Compared with other equipment, this kind of vertical roller mill is an ideal professional grinding mill for solid waste residue. It is newly upgraded, with high grinding efficiency, large production capacity, noise reduction and environmental protection. It is an ideal equipment for grinding water slag. Its advantages are as follows:

The utilization rate of coal mine energy is relatively high, because there are a lot of slag produced by coal industry smelting every year. In order to avoid these slag damage to the environment and increase the recycling utilization rate, slag grinding mill is a more thorough and effective way of utilization.

Source: guikuang By Administrator Posted: 2019-02-22 As we all know that the Raymond mill is one of the common use stone powder making machines, compare with other grinding mills, the Raymond mill usually is more stable and efficient. However, after a []

Source: GuikuangBy Administrator Posted: 2019-02-22 In the field of fluorite grinding, Raymond mill will be one of the most popular machines for fluorite powder grinding. As a common grinding mill for fluorite powder processing, fluorite Raymond mill is an excellent high efficiency equipment. It has scientific principles and design structure, high productivity, low energy consumption, []

Source: guikuang By Administrator Posted: 2019-02-25 As a common grinding plant, Raymond Mill can be used in fine powder making of barite, calcite, potassium feldspar, talc, marble, limestone, dolomite, fluorite, lime, activated clay, activated carbon, bentonite, kaolin, cement and phosphate rock, and other Non-flammable and []

Source: Guikuang By Administrator Posted: 2019-2-21 Generally speaking, the price of Raymond mill usually more cheaper than other grinding mills, and compare with other grinding mills, the Raymond mill usually has a stable performance, the capacity of Raymond mill can up to 20 t/h, and []

what are the main components of phosphorus slag powder and silica fume?

Phosphorus slag powder exists in the form of silicate glass, and its main composition is SiO2Al2O3 fe2o3mgo Cao Nao. Silica fume is also called micro silica powder, or micro silica powder or ultra-fine silica powder, generally referred to as silica fume. Silica fume is a kind of ultra-fine silicon powder material, which is formed by the rapid oxidation and condensation of SiO2 and Si gas produced in smelting ferrosilicon and industrial silicon with oxygen in the air.

The utilization rate of coal mine energy is relatively high, because there are a lot of slag produced by coal industry smelting every year. In order to avoid these slag damage to the environment and increase the recycling utilization rate, slag grinding mill is a more thorough and effective way of utilization.

Source: guikuang By Administrator Posted: 2019-02-22 As we all know that the Raymond mill is one of the common use stone powder making machines, compare with other grinding mills, the Raymond mill usually is more stable and efficient. However, after a []

Source: GuikuangBy Administrator Posted: 2019-02-22 In the field of fluorite grinding, Raymond mill will be one of the most popular machines for fluorite powder grinding. As a common grinding mill for fluorite powder processing, fluorite Raymond mill is an excellent high efficiency equipment. It has scientific principles and design structure, high productivity, low energy consumption, []

Source: guikuang By Administrator Posted: 2019-02-25 As a common grinding plant, Raymond Mill can be used in fine powder making of barite, calcite, potassium feldspar, talc, marble, limestone, dolomite, fluorite, lime, activated clay, activated carbon, bentonite, kaolin, cement and phosphate rock, and other Non-flammable and []

Source: Guikuang By Administrator Posted: 2019-2-21 Generally speaking, the price of Raymond mill usually more cheaper than other grinding mills, and compare with other grinding mills, the Raymond mill usually has a stable performance, the capacity of Raymond mill can up to 20 t/h, and []

high pressure grinding mill,micro powder grinding mill,ggbfs production line - hxjq mining machine manufacturer

There is high pressure spring inside this machine. In the working process, grinding roller starts to rotate. Under the function of high pressure spring and centrifugal force, the grinding roller rolls against the grinding ring. Working efficiency of this machine is greatly improved because its strength is 1.2 times higher than that of raymond mill. Micro powder grinding mill can be used in the grinding operation of feldspar, marble and limestone. Micro powder mill is capable of grinding the ultrafine powder and the product granularity can reach 3.55 micron~25 micron.

Ggbfs is chiefly used for adding material forstrong strength concrete. It belongs to the building material and its raw material is ggbfs. Equivalent cement can be replaced if the ggbfs is added into the concrete, thus the resource can be fully utilized. Ggbfs production line is specially used in the slag powder production line by taking advantage of powder grinding mill to grind the ggbfs into powder. Therefore, it is also called slag powder production line.

High pressure micro-powder mill is mainly formed by mill body, blower fan, ultra-fine analyzer finished product cyclone container, bag de-duster and air pipe; the elevator, storage bin, electric control cabinet, powder feeder and crusher are optional for the demands of customers.

In the grinding chamber of the high pressure Raymond mill, the roll assembly is hanged on the roll supporter through the cross arm bearing. The roll supporter connects with the main shaft and blades. High pressure springs press the rolls tightly to the chamber. When the main motor starts, the blades and rolls rotate together; the analyzer is driven by transmission device and the speed of analyzer determines the fineness of materials.