Wood Chipper

Wood Chipper

Paper mills have large demands for wood chips. Wood chips are raw materials for processing pulp in the paper making industry. The demand for paper is increasing, so wood chipping machine is expanding with the market. Wood chipper is used in the paper making industry.

Introduction

Wood chipper, also known as wood slicer and tree chipper, is an important machine in wood material processing industry. Wood chipper mainly uses wood logs, large branches, brushwood, wood slab, waste veneer, bamboo, etc. as raw materials and processes them into wood chips or slices with certain specifications. Wood chipper can be divided into disc wood chipper and drum wood chipper. Customers can make their own decisions based on raw materials, budgets and other specific requirements.

The drum wood chipper has higher cost and lower output, so it is not suitable for use in the paper making industry. Generally, the processed wood chips are used in boiler combustion. The disc wood chipper has simple and practical structure, lower cost and higher output, so it is mainly used in the paper making industry.

  1. Wood cost
  2. The purchase price of wood chips;
  3. The demand for wood chips;
  4. Related processing machine for wood chips.

However, the paper mill still has certain requirements for wood chips produced by wood chipper.

  1. No matter which kind of logs are used, they must be debarked, that is to say, the wood can be processed into wood chips after being debarked. It is necessary to use a professional wood barker. It can be divided into a drum wood barker and roll wood barker. After the wood is debarked, the disc wood chipper will be used to process it into wood chips;
  2. Wood chip size: for most of paper mills, there are no specific requirements for wood chip size, but for some paper mills, especially in some parts of China, almost all wood chips require a thickness of 0.3-05cm, a length of 2-5cm and a width of 3-8cm.

The above two points are the requirements of paper mills for wood chips processed by wood chipper. They are the most important for paper mills. For the disc wood chipper, the structure principle is simple and practical, but the investment can be obtained great return. It is the ideal wood chipping machine.

Structure and Working Principle of Disc Wood Chipper

Disc wood chipper is composed of machine chasis, disc blade, feeding hopper, engine, encloser and electric controlling device. Wood chips are drawn from feeding hopper at 10-15° leaning of the edge and chipped as soon as they encounter chipping blades. Disc blades set uniformly on disc plate. During the chipping, cutting blades spin at high speed and chipping chamber creates airflow by which wood chips are blow out of the discharge outlet.

Advantages of Disc Wood Chipper

  1. Wood slices or chips are adjustable in length and thus disc wood chipper has wide application in wood chip making industry, paper making industry, etc.

2.Low-voltage motor or high-voltage motor for preference. Belt conveyor can be equipped for large capacity wood chips production.

  1. Raw materials are various in categories such as log, branch, bamboo, limb, cotton stalk, slab, wood leftovers, etc.
  2. Compact structure, large capacity and high quality wood chips, but low power consumption and noise.
  3. Disc blades are made of alloy steel or stainless steel; NSK or SKF bearings; robust and durable.
wood chipper
disc wood chipper

Technical Data of Disc Wood Chipper

Model

Capacity(t)

Motor power(kw)

Weight(kg)

Main Shaft Rotatary Speed(r/min)

Blade Dia.(mm)

Blade QTY(Alloy Steel)

400

0.4-0.8

11

120

600

400

4

600

1-1.5

18.5

380

650

600

3

800

3-6

30

550

550

800

4

950

5-8

37-45

800

550

950

4

1150

8-13

75

2400

600

1150

4-6

1410

10-15

90

2800

600

1410

4

As a leading paper making equipment manufacturer, AGICO can provide you with high quality wood chipping machine and relevant information about drum wood chipper and disc wood chipper in details.

Pulp is a lignocellulosic fibrous material prepared by chemically or mechanically separating cellulose fibres from wood, fiber crops, waste paper, or rags. Many kinds of paper are made from wood with nothing else mixed into them. This includes newspapers, magazines and even toilet paper. Pulp is one of the most abundant raw materials.

A pulp mill is a manufacturing facility that converts wood chips or other plant fibre source into a thick fibre board which can be shipped to a paper mill for further processing. Pulp can be manufactured using mechanical, semi-chemical or fully chemical methods (kraft and sulfite processes). The finished product may be either bleached or non-bleached, depending on the customer requirements.

A paper machine (or paper-making machine) is an industrial machine which is used in the pulp and paper industry to create paper in large quantities at high speed. Modern paper-making machines are based on the principles of the Fourdrinier Machine, which uses a moving woven mesh to create a continuous paper web by filtering out the fibres held in a paper stock and producing a continuously moving wet mat of fibre. This is dried in the machine to produce a strong paper web.

The pulp produced up to this point in the process can be bleached to produce a white paper product. The chemicals used to bleach pulp have been a source of environmental concern, and recently the pulp industry has been using alternatives to chlorine, such as chlorine dioxide, oxygen, ozone and hydrogen peroxide.

Chemical pulp is produced by combining wood chips and chemicals in large vessels called digesters. There, heat and chemicals break down lignin, which binds cellulose fibres together, without seriously degrading the cellulose fibres. Chemical pulp is used for materials that need to be stronger or combined with mechanical pulps to give a product different characteristics. The kraft process is the dominant chemical pulping method, with the sulfite process second. Historically soda pulping was the first successful chemical pulping method.