A method for laying refractory masonry of a suspension cylinder

Abstract

The present invention discloses a method for laying refractory masonry of a suspension cylinder, including the laying of a suspension ring, the laying of the outer masonry of the suspension cylinder, the laying of the inner masonry of the suspension cylinder, the laying of the joint between the suspension ring and the lower parts of the inner and outer masonries of the suspension cylinder, the laying of the top surface of the outer masonry of the suspension cylinder, and the laying of the refractory masonry on the top of the annular air duct. The present invention realizes the laying of the refractory masonry of the suspension cylinder through the steps of laying the suspension ring, laying the outer masonry of the suspension cylinder, laying the inner masonry of the suspension cylinder, laying the joint between the suspension ring and the lower parts of the inner and outer masonries of the suspension cylinder, laying the top surface of the outer masonry of the suspension cylinder, and laying the refractory masonry on the top of the annular air duct, closely closing the outer masonry of the suspension cylinder, sealing the joint between the suspension ring and the lower parts of the inner and outer masonries of the suspension cylinder, reducing the construction difficulty or workload of the top surface of the outer masonry of the suspension cylinder, and better protecting the metal suspension cylinder inside.

Description

Technical Field

[0001] The present invention relates to the technical field of the masonry of a suspension cylinder lime kiln, and particularly to a masonry method for a refractory material masonry of a suspension cylinder. Background Art

[0002] The suspension cylinder of a suspension cylinder type double-chamber lime kiln forms an annular air duct together with the outer wall of the annular air duct in the middle of the lime kiln. The suspension cylinder is made of steel. A refractory material masonry is built around the suspension cylinder as a working layer to withstand harsh working conditions such as high temperature, erosion, and abrasion. The refractory material masonry of the suspension cylinder includes: the inner masonry of the suspension cylinder, the outer masonry of the suspension cylinder, the suspension ring masonry, and the top masonry of the annular air duct. There are currently the following problems in the construction of the masonry:

[0003] When building the inner masonry of the suspension cylinder with refractory bricks, since the inner masonry is an inner ring structure, the masonries can be tightly squeezed together through the thermal expansion effect. There is no convex and concave fitting designed on the surface of the used refractory bricks. Therefore, when the circular masonry is closed, the masonry can be tightly closed by cutting bricks. However, when building the outer masonry of the suspension cylinder, since the outer masonry is an outer ring structure, the masonry is prone to arching under the thermal expansion effect. In order to prevent the displacement and arching of the refractory bricks and seal the brick joints between the refractory bricks, bricks with complex shapes are often used, and the adjacent bricks are fitted together by adopting the convex and concave fitting method on the four surfaces of the upper, lower, left, and right of the bricks. When finally closing, the circular masonry is closed by cutting bricks, resulting in the cutting off of the convex and concave structure at the closing place and unable to be tightly fitted;

[0004] At the place where the suspension ring is combined with the lower parts of the inner and outer masonries of the suspension cylinder, there is a gap with a height of about 50 - 300 mm. The traditional sealing method is to fill it with fiber cotton. Since the strength of the fiber cotton filling body is very low, it is easily hollowed out under the long-term blowing of hot air, exposing the steel structure inside;

[0005] On the top of the outer masonry of the suspension cylinder, it is necessary to build the refractory material of the top of the annular air duct. It is required that the top surface of the outer masonry of the suspension cylinder is flat. Since the shape of the refractory bricks of the outer masonry is complex and the convex and concave fitting structure is adopted, either a part of the top layer of bricks is cut off, or bricks with a flat top surface and an engaging structure on other surfaces are designed and produced separately, resulting in a large workload and high cost.

[0006] In view of the above existing problems, we have proposed a masonry method for a refractory material masonry of a suspension cylinder. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the existing defects and provide a masonry method for a refractory material masonry of a suspension cylinder, which can effectively solve the problems in the background art.

[0008] To achieve the above object, the present invention provides the following technical solution: A method for constructing a refractory lining of a suspension cylinder, including the construction of a suspension ring, the construction of the outer lining of the suspension cylinder, the construction of the inner lining of the suspension cylinder, the construction of the joint between the suspension ring and the lower part of the inner and outer linings of the suspension cylinder, the construction of the top surface of the outer lining of the suspension cylinder, and the construction of the refractory lining on the top of the annular air duct;

[0009] The method for constructing a refractory lining of a suspension cylinder includes the following steps:

[0010] Step 1, the construction of the suspension ring;

[0011] Step 2, the construction of the outer lining of the suspension cylinder:

[0012] The refractory bricks are laid from bottom to top. First, lay the bottommost ring. When it comes to the end, that is, when the circular ring is about to close up, leave the gap;

[0013] Continue to lay the second ring upwards. Since it is laid with staggered joints, the final gap will be either wider or narrower than the first ring, that is, the left and right sides of the remaining gap are staggered from the two sides of the gap in the first ring;

[0014] Continue to lay upwards in the same way as the previous two rings until the topmost ring is laid;

[0015] The gaps from the first ring to the topmost ring are connected together to form a "pit" with staggered side edges from bottom to top;

[0016] Weld anchor bolts on the metal wall of the "pit";

[0017] Erect formwork on the outside of the "pit", and at the same time support a horizontal formwork at the bottommost part of the pit, leaving a gap with the same height as the joint between the suspension ring and the lower part of the outer lining of the suspension cylinder on both sides of the pit;

[0018] Pour the well-mixed refractory castable into the gap of the pit, and use a vibrating rod to vibrate to make the refractory castable dense. After vibrating and densifying, add refractory castable again and vibrate until the refractory castable is flush with the topmost layer of refractory bricks;

[0019] Cure for at least 24 hours and then remove the formwork;

[0020] Step 3, the construction of the inner lining of the suspension cylinder;

[0021] Step 4, the construction of the joint between the suspension ring and the lower part of the inner and outer linings of the suspension cylinder;

[0022] Step 5, the construction of the top surface of the outer lining of the suspension cylinder:

[0023] After the outer lining of the suspension cylinder is laid to the last layer, clean the upper part;

[0024] Formwork is set up around the masonry on the outside of the suspension cylinder;

[0025] Castable or ramming material is poured into the formwork and constructed by casting or ramming, with a thickness of 50 - 200 mm, so that the masonry on the outside of the suspension cylinder reaches the designed height;

[0026] After 24 hours, the formwork is removed, and the refractory masonry on the top of the annular air duct is continued to be built on the upper part;

[0027] Step Six, the construction of the refractory masonry on the top of the annular air duct.

[0028] Preferably, in the construction of the joint between the suspension ring and the lower part of the inner and outer masonry of the suspension cylinder, for the annular gap with a height of 50 - 300 mm, first fill it with fiber cotton, with a thickness of about 10 - 40 mm; outside the fiber cotton, fill it with castable or ramming material and coating material, and scrape it flat; between the castable (or ramming material, coating material) and the bottom surface of the upper inner and outer masonry of the suspension cylinder, fill a fiber blanket / mat with a thickness of 10 - 30 mm..

[0029] Preferably, in the construction of the masonry on the outside of the suspension cylinder, the well - stirred refractory castable is poured into the pit gap, and a vibrating rod is used to vibrate to make the refractory castable dense. The height of the refractory castable formed each time is preferably not more than 30 cm.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] The present invention realizes the construction of the refractory masonry of the suspension cylinder through the construction steps of the suspension ring, the masonry on the outside of the suspension cylinder, the masonry on the inside of the suspension cylinder, the joint between the suspension ring and the lower part of the inner and outer masonry of the suspension cylinder, the top surface of the masonry on the outside of the suspension cylinder, and the refractory masonry on the top of the annular air duct. The masonry on the outside of the suspension cylinder is tightly closed, the joint between the suspension ring and the lower part of the inner and outer masonry of the suspension cylinder is sealed, reducing the construction difficulty and workload of the top surface of the masonry on the outside of the suspension cylinder, and can better protect the metal - made suspension cylinder inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a flow chart of a method for constructing a refractory masonry of a suspension cylinder according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0033] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments.

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment 1

[0036] A masonry method for a refractory lining of a suspension cylinder includes the masonry of a suspension ring, the masonry of the outer lining of the suspension cylinder, the masonry of the inner lining of the suspension cylinder, the masonry at the joint between the suspension ring and the lower parts of the inner and outer linings of the suspension cylinder, the masonry of the top surface of the outer lining of the suspension cylinder, and the masonry of the refractory lining on the top of the annular air duct.

[0037] The masonry method for the refractory lining of the suspension cylinder includes the following steps:

[0038] Step 1, the masonry of the suspension ring;

[0039] Step 2, the masonry of the outer lining of the suspension cylinder:

[0040] The refractory bricks are laid from bottom to top. First, lay the bottommost ring. When it comes to the end, that is, when the ring is about to close, leave a gap.

[0041] Continue to lay the second ring upwards. Since it is laid with staggered joints, the final gap will be either wider or narrower than the first ring, that is, the two sides of the remaining gap are staggered from the two sides of the gap in the first ring.

[0042] Continue to lay upwards in the same way as the previous two rings until the topmost ring is laid.

[0043] The gaps from the first ring to the topmost ring are connected together to form a "pit" with staggered side edges from bottom to top.

[0044] Weld anchor bolts on the metal wall of the "pit".

[0045] Set up formwork on the outside of the "pit", and at the same time support a horizontal formwork at the bottommost part of the pit, leaving a gap with the same height as the joint between the two suspension rings on both sides of the pit and the lower part of the outer lining of the suspension cylinder.

[0046] Pour the well-mixed refractory castable into the gap of the pit, and use a vibrating rod to vibrate to make the refractory castable dense. After vibrating and densifying, add refractory castable again and vibrate until the refractory castable is flush with the topmost layer of refractory bricks.

[0047] Cure for at least 24 hours and then remove the formwork.

[0048] Step 3, the masonry of the inner lining of the suspension cylinder;

[0049] Step 4, masonry at the joint between the suspension ring and the lower part of the inner and outer masonry of the suspension cylinder;

[0050] Step 5, masonry of the top surface of the outer masonry of the suspension cylinder:

[0051] After the outer masonry of the suspension cylinder is built to the last layer, clean the upper part;

[0052] Set up formwork around the outer masonry of the suspension cylinder;

[0053] Pour the castable or ramming material into the formwork and construct it by casting or ramming, with a thickness of 50 - 200 mm, so that the outer masonry of the suspension cylinder reaches the designed height;

[0054] Remove the formwork after 24 hours and continue to build the refractory masonry on the top of the annular air duct above;

[0055] Step 6, masonry of the refractory masonry on the top of the annular air duct.

[0056] Furthermore, in the masonry at the joint between the suspension ring and the lower part of the inner and outer masonry of the suspension cylinder, for the annular gap with a height of 50 - 300 mm, first fill it with fiber cotton with a thickness of about 10 - 40 mm; outside the fiber cotton, fill it with castable or ramming material and coating material, and scrape it flat; between the castable (or ramming material, coating material) and the bottom surface of the upper inner and outer masonry of the suspension cylinder, fill it with a fiber blanket / mat with a thickness of 10 - 30 mm.

[0057] Furthermore, in the masonry of the outer masonry of the suspension cylinder, pour the well - stirred refractory castable into the concave pit gap and vibrate it with a vibrating rod to make the refractory castable dense. The height of the refractory castable formed each time is preferably not more than 30 cm.

[0058] The present invention realizes the masonry of the refractory masonry of the suspension cylinder through the steps of masonry of the suspension ring, masonry of the outer masonry of the suspension cylinder, masonry of the inner masonry of the suspension cylinder, masonry at the joint between the suspension ring and the lower part of the inner and outer masonry of the suspension cylinder, masonry of the top surface of the outer masonry of the suspension cylinder, and masonry of the refractory masonry on the top of the annular air duct, closely closes the outer masonry of the suspension cylinder, seals the joint between the suspension ring and the lower part of the inner and outer masonry of the suspension cylinder, reduces the construction difficulty and workload of the top surface of the outer masonry of the suspension cylinder, and can better protect the metal - made suspension cylinder inside.

[0059] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for laying refractory masonry of a suspension cylinder, including the laying of a suspension ring, the laying of the outer masonry of the suspension cylinder, the laying of the inner masonry of the suspension cylinder, the laying at the joint between the suspension ring and the lower parts of the inner and outer masonries of the suspension cylinder, the laying of the top surface of the outer masonry of the suspension cylinder, and the laying of the refractory masonry on the top of the annular air duct; This method for laying refractory masonry of a suspension cylinder includes the following steps: Step 1, laying of the suspension ring; Step 2, laying of the outer masonry of the suspension cylinder: Firebricks are laid from bottom to top. First, lay the bottommost ring. When it comes to the end, that is, when the circular ring is about to close up, leave a gap; Continue to lay the second ring upwards. Since it is laid with staggered joints, the final gap will be either wider or narrower than the first ring, that is, the two sides of the remaining gap are staggered from the two sides of the gap in the first ring; Continue to lay upwards in the same way as the previous two rings until the topmost ring is laid; The gaps from the first ring to the topmost ring are connected into one body, forming a "pit" with staggered side edges from bottom to top; Weld anchor bolts on the metal wall of the "pit"; Erect formwork on the outside of the "pit", and at the same time support a horizontal formwork at the bottommost part of the pit, leaving a gap with the same height as the joint between the two suspension rings on both sides of the "pit" and the lower part of the outer masonry of the suspension cylinder; Pour the well-stirred refractory castable into the gap of the "pit", and use a vibrating rod to vibrate to make the refractory castable dense. After vibrating and compacting, add refractory castable again and vibrate until the refractory castable is flush with the topmost layer of firebricks; Cure for at least 24 hours and then remove the formwork; Step 3, laying of the inner masonry of the suspension cylinder; Step 4, laying at the joint between the suspension ring and the lower parts of the inner and outer masonries of the suspension cylinder; Step 5, laying of the top surface of the outer masonry of the suspension cylinder: After the outer masonry of the suspension cylinder is laid to the last layer, clean the upper part; Support formwork around the outer masonry of the suspension cylinder; Pour the castable or ramming material into the formwork and construct by pouring or ramming, with a thickness of 50 - 200 mm, so that the outer masonry of the suspension cylinder reaches the designed height; Remove the formwork after 24 hours and continue to lay the refractory masonry on the top of the annular air duct above; Step 6, laying of the refractory masonry on the top of the annular air duct.

2. The masonry method of a refractory lining for a suspension cylinder according to claim 1, characterized in that , In the laying at the joint between the suspension ring and the lower parts of the inner and outer masonries of the suspension cylinder, for the annular gap with a height of 50 - 300 mm, first stuff it with fiber cotton with a thickness of 10 - 40 mm; outside the fiber cotton, fill it with castable or ramming material and coating material and scrape it flat; between the castable and the bottom surface of the upper inner and outer masonries of the suspension cylinder, stuff a fiber blanket / mat with a thickness of 10 - 30 mm.

3. A method for laying refractory masonry of a suspension cylinder, according to claim 1, characterized in that , In the laying of the outer masonry of the suspension cylinder, pour the well-stirred refractory castable into the gap of the pit, and use a vibrating rod to vibrate to make the refractory castable dense. The height of the refractory castable formed each time does not exceed 30 cm.

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